A.M.-Settled SPX Options, Any Weekday Expiration

Item 1. Text of the Proposed Rule Change (a) Cboe Exchange, Inc. (the "Exchange" or "Cboe Options") proposes to amend its rules to permit the listing of A.M.-settled options on the S&P 500 Index ("SPX" or "SPX options") that expire (1) on any Monday, Tuesday, Wednesday, Thursday, or Friday (other than the third Friday-of-the-month or days that coincide with an end-of- month expiration) and (2) the last trading day of the month. The text of the proposed rule change is provided in Exhibit 5. (b) Not applicable. (c) Not applicable. Item 2. Procedures of the Self-Regulatory Organization (a) The Exchange's President (or designee) pursuant to delegated authority approved the proposed rule change on April 14, 2026. (b) Please refer questions and comments on the proposed rule change to Pat Sexton, Executive Vice President, General Counsel, and Corporate Secretary, (312) 786- 7467, or Sarah Williams, (224) 461-6793, Cboe Exchange, Inc., 433 West Van Buren Street, Chicago, Illinois 60607. Item 3. Self-Regulatory Organization's Statement of the Purpose of, and Statutory Basis for, the Proposed Rule Change (a) Purpose The Exchange proposes to amend its rules to permit the listing of A.M.-settled SPX options that expire (1) on any Monday, Tuesday, Wednesday, Thursday, or Friday (other

("A.M.-Settled Weekly Expirations") and (2) on the last trading day of the month ("EOMs" or "EOM Expirations").

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Background Historical context By way of background, when cash-settled   index options were first introduced in the 1 1980s, settlement was based on the closing value of the underlying index on the option's expiration date. The Commission later became concerned about the impact of P.M.-settled, cash-settled index options on the markets for the underlying stocks at the close on expiration Fridays. Specifically, certain episodes of price reversals around the close on quarterly expiration dates attracted the attention of regulators to the possibility that the simultaneous expiration of index futures, futures options, and options might be inducing abnormal volatility in the index value around the close. Academic research at the time provided at least some 2 evidence suggesting that futures and options expirations contributed to excess volatility and reversals around the close on those days. In light of the concerns with P.M. settlement and to 3 help ameliorate the price effects associated with expirations of P.M.-settled, cash-settled index products, in 1987, the Commodity Futures Trading Commission ("CFTC") approved a rule change by the Chicago Mercantile Exchange ("CME") to provide for A.M. settlement for 4

The seller of a "cash-settled" index option pays out the cash value of the applicable index on 1 expiration or exercise. A "physically settled" option, like equity and ETF options, involves the transfer of the underlying asset rather than cash. See Characteristics and Risks of Standardized Options, available at: https://www.theocc.com/Company-Information/Documents-and- Archives/Options-Disclosure-Document. The close of trading on the quarterly expiration Friday (i.e., the third Friday of March, June, 2 September and December), when options, index futures, and options on index futures all expire simultaneously, became known as the "triple witching hour." See Securities and Exchange Commission, Division of Economic Risk and Analysis, Memorandum, 3 Cornerstone Analysis of PM Cash-Settled Index Option Pilots (February 2, 2021) ("DERA Staff PM Pilot Memo") at 5, available at: https://www.sec.gov/files/Analysis_of_PM_Cash_Settled_Index_Option_Pilots.pdf. The exercise settlement value for an A.M.-settled index option is determined by reference to the 4 reported level of the index as derived from the opening prices of the component securities on the business day before expiration.

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index futures, including futures on the S&P 500. The Commission subsequently approved a 5 rule change by Cboe Options to list and trade A.M.-settled SPX options. In 1992, the 6 Commission approved Cboe Options' proposal to transition all of its European-style cash- settled options on the S&P 500 Index to A.M. settlement. 7 In 1993, the Commission approved a rule allowing Cboe Options to list P.M.-settled options on certain broad-based indices, including the S&P 500, expiring at the end of each calendar quarter ("Quarterly Index Expirations") (since adopted as permanent). In September 8 2010, the Commission approved a rule change that established a pilot program under which the Exchange is permitted to list P.M.-settled options on broad-based indexes to expire on (a) any Friday of the month, other than the third Friday-of-the-month, and (b) the last trading day of the month. On January 14, 2016, the Commission approved a Cboe Options proposal to 9 expand the pilot program to allow P.M.-settled options on broad-based indexes to expire on any Wednesday of month, other than those that coincide with an EOM. On August 10, 2016, 10 the Commission approved a Cboe Options proposal to expand the pilot program to allow P.M.-settled options on broad-based indexes to expire on any Monday of month, other than

See Securities Exchange Act Release No. 24367 (April 17, 1987), 52 FR 13890 (April 27, 1987) 5 (SR-CBOE-87-11) (noting that CME moved S&P 500 futures contract's settlement value to opening prices on the delivery date). See id. 6

See Securities Exchange Act Release No. 31800 (February 1, 1993), 58 FR 7274 (February 5, 1993) 8 (SR-CBOE-92-13); and see Rule 4.13(a)(2)(B); see also Securities Exchange Act Release Nos. 54123 (July 11, 2006), 71 FR 40558 (July 17, 2006) (SR-CBOE-2006-65); and 60164 (June 23, 2009), 74 FR 31333 (June 30, 2009) (SR-CBOE-2009-029). See Securities Exchange Act Release 62911 (September 14, 2010), 75 FR 57539 (September 21, 9

1. (order approving SR-CBOE-2009-075). See Securities Exchange Act Release 76909 (January 14, 2016), 81 FR 3512 (January 21, 2016) 10 (order approving SR-CBOE-2015-106).

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those that coincide with an EOM. On April 12, 2022, the Commission approved a Cboe 11 Options proposal to expand the pilot program to allow P.M.-settled SPX options to also expire on Tuesday or Thursday. On September 15, 2022, the Commission approved a Cboe 12 Options proposal to expand the pilot program to allow P.M.-settled XSP options to similarly expire on Tuesday or Thursday. On July 27, 2023, the Commission approved a Cboe 13 Options proposal to make the program permanent and permit the Exchange to list P.M.-settled options on any broad-based index eligible for standard trading that expire on: (1) any Monday, Wednesday, or Friday (other than the third Friday-of-the-month or days that coincide with an end-of-month expiration and, with respect to SPX and XSP options any Tuesday or Thursday and (2) the last trading day of the month. Subsequently, in November 2023, the Commission 14 approved a Cboe Options proposal to permit P.M.-settled options on any broad-based index eligible for standard options trading that expire on Tuesday or Thursday. 15 Current Offerings Currently, under the Nonstandard Expirations Program set forth in Rule 4.13(e), the Exchange may open for trading (1) Weekly Expirations on any broad-based index eligible for standard options trading and on CBTX, MBTX, and the Cboe Magnificent 10 Index to expire on any Monday, Tuesday, Wednesday, Thursday, or Friday (other than the third Friday-of- the-month or days that coincide with an EOM expiration) and (2) EOMs on any broad-based

See Securities Exchange Act Release 78531 (August 10, 2016), 81 FR 54643 (August 16, 2016) 11 (order approving SR-CBOE-2016-046). See Securities Exchange Act Release 94682 (April 12, 2022) (order approving SR-CBOE- 2022-12 005). See Securities Exchange Act Release 95795 (September 21, 2022) (order approving SR-CBOE- 13 2022-039). See Securities Exchange Act Release 98008 (July 27, 2023) (order approving SR-CBOE-2023-020). 14 See Securities Exchange Act Release No. 98957 (November 15, 2023). 15

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index eligible for standard options trading and on CBTX, MBTX, and the Cboe Magnificent 10 Index to expire on last trading day of the month. Further, under its rules, with respect to SPX options, the Exchange may open for trading standard monthly expirations with A.M.-settlement on the third Friday-of the- month, Weekly Expirations with P.M.-settlement (including P.M.-Settled Third Friday 16 17 Index Options) ; and EOM expirations with P.M.-settlement. 18 19 The Exchange now proposes to amend its rules to permit the listing of A.M.-Settled Weekly and EOM Expirations on SPX options. Proposal The Exchange proposes to amend Rule 4.13(e), which governs its Nonstandard Expirations Program ("Program"), to permit A.M.-settled SPX options that expire (1) on any Monday, Tuesday, Wednesday, Thursday, or Friday (other than the third Friday-of- the-month ("Expiration Friday") or days that coincide with an EOM expiration) ("A.M.- Settled Weekly Expirations") and (2) EOMs. A.M.-Settled Weekly Expirations and EOM Expirations on SPX are subject to all provisions of Rule 4.13 and treated the same as A.M.-settled options on SPX that expire on the third Friday of the expiration month, as well as P.M.-settled Weekly and EOM SPX options. The maximum number of expirations that may be listed for each A.M.-Settled Weekly Expiration on SPX options (i.e., a A.M.-Settled Monday expiration, A.M.-Settled Tuesday expiration, A.M.-Settled Wednesday expiration, A.M.-Settled Thursday

See Rule 4.13(a)(2) and (3). 16 See Rule 4.13(e)(1) 17 See Rule 4.13, Interpretation and Policy .13. 18 See Rule 4.13(e)(2) 19

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expiration, or A.M.-Settled Friday expiration, as applicable) and each A.M.-Settled EOM 20 Expiration on SPX options is the same as the maximum number of expirations permitted in Rule 4.13(a)(2) for standard options on SPX. A.M.-Settled Weekly Expirations on SPX need not be for consecutive Monday, Tuesday, Wednesday, Thursday, or Friday expirations as applicable; however, the expiration date of a nonconsecutive expiration may not be beyond what would be considered the last expiration date if the maximum number of expirations were listed consecutively. A.M.-Settled Weekly Expirations that are first listed in SPX options may expire up to four weeks from the actual listing date. Similarly, A.M.-Settled EOMs on SPX need not be for consecutive end of month expirations; however, the expiration date of a non-consecutive expiration may not be beyond what would be considered the last expiration date if the maximum number of expirations were listed consecutively. A.M.-Settled EOMs that are first listed in SPX options may expire up to four weeks from the actual listing date. If the Exchange lists A.M.-Settled EOMs and A.M.-Settled Weekly Expirations on SPX, the Exchange will list an A.M.-Settled EOM instead of a A.M.-Settled Weekly Expiration that expires on the same day in the given class. Other expirations in the same class are not counted as part of the maximum number of Weekly or EOM Expirations for SPX. If the Exchange is not open for business on a respective Monday, the normally Monday expiring Weekly Expirations will expire on the following business day. If the

As part of the proposed changes, the Exchange proposes conforming amendments to Rules 20 4.13(e)(1) and (2) to replace certain existing references to "Weekly Expirations" with "P.M.-settled Weekly Expirations," to reflect that those provisions are applicable to P.M.-settled options series and to distinguish them from the A.M.-Settled Weekly Expirations proposed. For the avoidance of doubt, there are no changes to the P.M.-Settled Weekly Expirations or EOMs as a result of the proposed change. The Exchange also proposes to remove language stating that Weekly Expirations and EOMs shall be P.M-settled.

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Exchange is not open for business on a respective Tuesday, Wednesday, Thursday, or Friday, the normally Tuesday, Wednesday, Thursday, or Friday expiring Weekly Expirations will expire on the previous business day. If two different Weekly Expirations on an index would expire on the same day because the Exchange is not open for business on a certain weekday, the Exchange will list only one of such Weekly Expirations. In connection with proposed change, the Exchange proposes to amend Rule 5.1(b)(2)(C), which currently states in relevant part that on their last trading day, Regular Trading Hours for Nonstandard Expirations are from 9:30 a.m. to 4:00 p.m. Specifically, the Exchange proposes to replace the reference to "Nonstandard Expirations" with "P.M.- Settled Nonstandard Expirations." The Exchange believes that the introduction of A.M.-Settled Weekly Expirations and EOMs on SPX options will provide market participants with additional hedging tools and greater trading opportunities. By offering expanded expirations along with the current

and hedging strategies and manage their portfolios. The Exchange believes that expanding the SPX options offering to include A.M.- Settled Weekly and EOM Expirations would allow market participants to purchase an option based on their needed timing and allow them to tailor their investment or hedging needs more effectively. Further, the Exchange believes there is sufficient investor interest and demand in A.M-Settled Weekly and EOM Expirations on SPX options to warrant

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inclusion in the Program and in the Rules, and that the Program and the Rules, as amended, will continue to provide investors with additional means of managing their risk exposures and carrying out their investment objectives. With regard to the impact of this proposal on system capacity, the Exchange has analyzed its capacity and represents that it believes that the Exchange has the necessary systems capacity to handle any potential additional traffic associated with trading of A.M- Settled Weekly Expirations and EOM Expirations for SPX options. The Options Price Reporting Authority ("OPRA") also informed the Exchange it believes it has the necessary systems capacity to handle the additional traffic associated with the listing of A.M-Settled Weekly Expirations and EOM Expirations for SPX options that would result from this proposed rule change. The Exchange does not believe that its Trading Permit Holders ("TPHs") will experience any capacity issues as a result of this proposal and represents that it will monitor the trading volume associated with any possible additional SPX options series listed as a result of this proposal and the effect (if any) of these additional series on market fragmentation and on the capacity of the Exchange's automated systems. In addition to this, the Exchange believes that its existing surveillance and reporting safeguards in place are adequate to deter and detect possible manipulative behavior which might arise from listing and trading A.M-Settled Weekly and EOM Expirations for SPX options (as the Exchange currently applies these to SPX options that are A.M.-settled with standard expirations, as well as P.M.-settled with weekly, monthly and quarterly expirations) and will support the protection of investors and the public interest. Furthermore, the trading of A.M-Settled Weekly and EOM Expirations for SPX options

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will be subject to the same rules that currently govern the trading of these options with other expirations, including governing customer accounts, position and exercise limits, 21 margin requirements and trading halt procedures, among other Rules, which are designed to prevent fraudulent and manipulative acts and practices. In response to any potential concerns that disruptive trading conduct could occur as a result of the concurrent listing and trading of two index option products based on the same index but for which different settlement methodologies exist (i.e., one is A.M.-settled and one is P.M.-settled), the Exchange notes that for roughly five years (1987 to 1992) the Exchange listed and traded an A.M.-settled S&P 500 index option under symbol NSX at the same time it listed and traded a P.M.-settled S&P 500 index option under symbol SPX, and the Exchange did not observe any market disruptions as a result of offering both products. 22 The adoption of trading of A.M-Settled Weekly and EOM Expirations on the S&P 500 Index on the same exchange as A.M.-settled (with standard expirations) and P.M- settled options on the S&P 500 Index would provide greater spread opportunities. This manner of trading allows a market participant to take advantage of the different expiration times, which provides expanded trading opportunities. In the options market currently, market participants regularly trade similar or related products in conjunction with each other, which contributes to overall market liquidity.

There are no position or exercise limits for SPX options, per Rules 8.31(a) and 8.42(b), respectively. 21 Today, A.M.-settled SPX options and P.M.-Settled SPX options trade under different symbols (i.e., 22 SPX and SPXW, respectively).

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(b) Statutory Basis The Exchange believes the proposed rule change is consistent with the Securities Exchange Act of 1934 (the "Act") and the rules and regulations thereunder applicable to the Exchange and, in particular, the requirements of Section 6(b) of the Act. Specifically, 23 the Exchange believes the proposed rule change is consistent with the Section 6(b)(5) 24 requirements that the rules of an exchange be designed to prevent fraudulent and manipulative acts and practices, to promote just and equitable principles of trade, to foster cooperation and coordination with persons engaged in regulating, clearing, settling, processing information with respect to, and facilitating transactions in securities, to remove impediments to and perfect the mechanism of a free and open market and a national market system, and, in general, to protect investors and the public interest. Additionally, the Exchange believes the proposed rule change is consistent with the Section 6(b)(5) 25 requirement that the rules of an exchange not be designed to permit unfair discrimination between customers, issuers, brokers, or dealers. In particular, the Exchange believes that the proposed rule change will remove impediments to and perfect the mechanism of a free and open market and a national market system, and, in general, to protect investors and the public interest. The Exchange believes that the introduction of A.M-Settled Weekly and EOM Expirations for SPX options will provide investors with expanded hedging tools and greater trading opportunities. As a result, investors will have additional means to manage their risk exposures and carry out

15 U.S.C. 78f(b). 23 15 U.S.C. 78f(b)(5). 24 Id. 25

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their investment objectives. By offering expanded expirations along with the current

and hedging strategies and manage their portfolios. For example, the proposed rule change will allow market participants to spread risk across more trading days and incorporate daily changes in the markets, which may reduce the premium cost of buying protection. The Exchange represents that it believes that it has the necessary systems capacity to support any additional traffic associated with trading of A.M-Settled Weekly and EOM Expirations for SPX options and does not believe that its TPHs will experience any capacity issues as a result of this proposal. The Exchange does not believe that the addition of A.M-Settled Weekly and EOM Expirations for SPX options to the Nonstandard Expirations Program will raise any prohibitive regulatory concerns, nor adversely impact fair and orderly markets on expiration days. The Exchange has not experienced any meaningful regulatory concerns, nor adverse impact on fair and orderly markets, in connection with these programs, nor with the listing of standard A.M.-settled expirations for SPX options along with P.M.- settled expirations, (as the Exchange currently does) and is unaware of any reason why adding A.M.-settled options with expirations each day of the week for SPX options would be create such concerns or impact. Particularly, the Exchange does not believe increases in the number of options series and expirations will have any significant adverse economic impact on the futures, index, or underlying index component securities markets. The

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Exchange believes that the proposed rule change will provide investors with greater trading and hedging opportunities and flexibility, allowing them to transact in SPX options in a manner more aligned with specific timing needs and more effectively tailor their investment and hedging objectives by listing these A.M-settled options that expire each trading day of the week, in addition to options that expire at on the third Friday-of-the- month or that are P.M-settled and expire daily, monthly and quarterly (which, as noted above, the Exchange may already do pursuant to separate listing programs in the Rules). The Commission previously recognized the benefits of A.M-settlement for broad- based index options when it approved Cboe Options' proposal to transition most of its cash- settled index options, including on the S&P 500 Index, to A.M.-settlement. Specifically, the 26 Commission identified several advantages of opening price settlement, including: (1) the ability to facilitate contra-side interest to alleviate order imbalances caused by the unwinding of index-related positions, without requiring market participants to assume overnight or weekend position risk; (2) providing market participants the remainder of the trading day to adjust to price movements resulting from expiration activity and assess whether those movements reflect changes in fundamental value or short-term supply and demand; and (3) allowing stock positions associated with expiring contracts to benefit from orderly opening procedures designed to facilitate price discovery. 27

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The Exchange believes the benefits set forth by the Commission are not unique to standard monthly expirations. Specifically, as daily and end-of-month P.M.-settled SPX expirations have grown in prominence, the same concerns regarding order imbalance and price discovery could arise at any expiration (not just the third Friday of each month). Accordingly, the Exchange believes that extending A.M.-settlement to daily and end-of- month expirations is consistent with the Commission's own rationale, and would provide market participants with those same protections across the full expiration calendar. Finally, the Exchange believes its proposal to introduce changes to specify between A.M.-Settled Weekly Expirations and P.M.-Settled Weekly Expirations are reasonable, as they provide clarity within the Exchange rules, thereby mitigating potential investor confusion. Item 4. Self-Regulatory Organization's Statement on Burden on Competition The Exchange does not believe that the proposed rule change will impose any burden on competition that is not necessary or appropriate in furtherance of the purposes of the Act. The Exchange does not believe that the proposed rule change will impose any burden on intramarket competition that is not necessary or appropriate in furtherance of the purposes of the Act because A.M.-settled SPX options with Weekly and EOM Expirations will be available to all market participants. By listing SPX options with these expirations (in addition to the standard Expiration Friday expirations (A.M.-settled) and weekly and EOM expirations (P.M.-settled) that are currently listed), the proposed rule change will provide all investors that participate in the markets for these index options available for trading on the Exchange with greater trading and hedging opportunities and flexibility to meet their investment and hedging needs.

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The Exchange does not believe that the proposal to list A.M.-settled SPX options with Weekly and EOM Expirations will impose any burden on intermarket competition that is not necessary or appropriate in furtherance of the purposes of the Act because these options are proprietary Exchange products. To the extent that the addition of these expirations for SPX options makes the Exchange a more attractive marketplace to market participants at other exchanges, such market participants are free to elect to become market participants on the Exchange. Further, to other exchanges offer "nonstandard" expirations for index options and are welcome to similarly propose to list options on those 28 index or equity products with similar expirations as proposed herein. Finally, as noted above, SPX options with these expirations will trade in the same manner as other options with these expirations currently do. Item 5. Self-Regulatory Organization's Statement on Comments on the Proposed Rule Change Received from Members, Participants, or Others The Exchange neither solicited nor received written comments on the proposed rule change. Item 6. Extension of Time Period for Commission Action The Exchange does not consent to an extension of the time period for Securities and Exchange Commission (the "Commission") action on the proposed rule change specified in Section 19(b)(2) of the Act. 29

See, e.g., Nasdaq PHLX, LLC Options 4A, Section 12 (permitting nonstandard expirations, 28 including daily expirations for Nasdaq-100 index options and Nasdaq 100-Micro index options); and Nasdaq ISE, LLC Options 4, Section 5, Supplementary Material .03 (permitting short-term options series with daily expirations for SPY and QQQ options). 15 U.S.C. 78s(b)(2). 29

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Item 7. Basis for Summary Effectiveness Pursuant to Section 19(b)(3) or for Accelerated Effectiveness Pursuant to Section 19(b)(2) or Section 19(b)(7)(D) Not applicable. Item 8. Proposed Rule Change Based on Rules of Another Self-Regulatory Organization or of the Commission The proposed rule change is not based on a rule either of another self-regulatory organization or of the Commission. Item 9. Security-Based Swap Submissions Filed Pursuant to Section 3C of the Act Not applicable. Item 10. Advance Notices Filed Pursuant to Section 806(e) of the Payment, Clearing and Settlement Supervision Act Not applicable. Item 11. Exhibits Exhibit 1. Completed Notice of Proposed Rule Change for publication in the Federal Register. Exhibit 5. Proposed rule text.

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Page 18 of 36 EXHIBIT 1 SECURITIES AND EXCHANGE COMMISSION [Release No. 34- ; File No. SR-CBOE-2026-037] [Insert date] Self-Regulatory Organizations; Cboe Exchange, Inc.; Notice of Filing of a Proposed Rule Change to Amend its Rules to Permit the Listing of A.M.-Settled Options on the S&P 500 Index ("SPX" or "SPX Options") that Expire (1) on Any Monday, Tuesday, Wednesday, Thursday, or Friday (other than the Third Friday-of-the-Month or Days that Coincide with an End-of-Month Expiration) and (2) the Last Trading Day of the Month Pursuant to Section 19(b)(1) of the Securities Exchange Act of 1934 (the "Act"), 1 and Rule 19b-4 thereunder, notice is hereby given that on [insert date], Cboe Exchange, 2 Inc. (the "Exchange" or "Cboe Options") filed with the Securities and Exchange Commission (the "Commission") the proposed rule change as described in Items I, II, and III below, which Items have been prepared by the Exchange. The Commission is publishing this notice to solicit comments on the proposed rule change from interested persons.

1. Self-Regulatory Organization's Statement of the Terms of Substance of the Proposed Rule Change Cboe Exchange, Inc. (the "Exchange" or "Cboe Options") proposes to amend its rules to permit the listing of A.M.-settled options on the S&P 500 Index ("SPX" or "SPX options") that expire (1) on any Monday, Tuesday, Wednesday, Thursday, or Friday (other

and (2) the last trading day of the month. The text of the proposed rule change is provided in Exhibit 5.

15 U.S.C. 78s(b)(1). 1 17 CFR 240.19b-4. 2

Page 19 of 36 The text of the proposed rule change is also available on the Commission's website (https://www.sec.gov/rules/sro.shtml), the Exchange's website (https://www.cboe.com/us/options/regulation/rule_filings/bzx/), and at the principal office of the Exchange.

1. Self-Regulatory Organization's Statement of the Purpose of, and Statutory
   Basis for, the Proposed Rule Change In its filing with the Commission, the Exchange included statements concerning the purpose of and basis for the proposed rule change and discussed any comments it received on the proposed rule change. The text of these statements may be examined at the places specified in Item IV below. The Exchange has prepared summaries, set forth in sections A, B, and C below, of the most significant aspects of such statements.

2. Self-Regulatory Organization's Statement of the Purpose of, and Statutory
   Basis for, the Proposed Rule Change

3. Purpose
   The Exchange proposes to amend its rules to permit the listing of A.M.-settled SPX options that expire (1) on any Monday, Tuesday, Wednesday, Thursday, or Friday (other

("A.M.-Settled Weekly Expirations") and (2) on the last trading day of the month ("EOMs" or "EOM Expirations"). Background Historical context By way of background, when cash-settled   index options were first introduced in the 3 1980s, settlement was based on the closing value of the underlying index on the option's

The seller of a "cash-settled" index option pays out the cash value of the applicable index on 3 expiration or exercise. A "physically settled" option, like equity and ETF options, involves the

Page 20 of 36 expiration date. The Commission later became concerned about the impact of P.M.-settled, cash-settled index options on the markets for the underlying stocks at the close on expiration Fridays. Specifically, certain episodes of price reversals around the close on quarterly expiration dates attracted the attention of regulators to the possibility that the simultaneous expiration of index futures, futures options, and options might be inducing abnormal volatility in the index value around the close. Academic research at the time provided at least some 4 evidence suggesting that futures and options expirations contributed to excess volatility and reversals around the close on those days. In light of the concerns with P.M. settlement and to 5 help ameliorate the price effects associated with expirations of P.M.-settled, cash-settled index products, in 1987, the Commodity Futures Trading Commission ("CFTC") approved a rule change by the Chicago Mercantile Exchange ("CME") to provide for A.M. settlement for 6 index futures, including futures on the S&P 500. The Commission subsequently approved a 7 rule change by Cboe Options to list and trade A.M.-settled SPX options. In 1992, the 8

transfer of the underlying asset rather than cash. See Characteristics and Risks of Standardized Options, available at: https://www.theocc.com/Company-Information/Documents-and- Archives/Options-Disclosure-Document. The close of trading on the quarterly expiration Friday (i.e., the third Friday of March, June, 4 September and December), when options, index futures, and options on index futures all expire simultaneously, became known as the "triple witching hour." See Securities and Exchange Commission, Division of Economic Risk and Analysis, Memorandum, 5 Cornerstone Analysis of PM Cash-Settled Index Option Pilots (February 2, 2021) ("DERA Staff PM Pilot Memo") at 5, available at: https://www.sec.gov/files/Analysis_of_PM_Cash_Settled_Index_Option_Pilots.pdf. The exercise settlement value for an A.M.-settled index option is determined by reference to the 6 reported level of the index as derived from the opening prices of the component securities on the business day before expiration. See Securities Exchange Act Release No. 24367 (April 17, 1987), 52 FR 13890 (April 27, 1987) 7 (SR-CBOE-87-11) (noting that CME moved S&P 500 futures contract's settlement value to opening prices on the delivery date). See id. 8

Page 21 of 36 Commission approved Cboe Options' proposal to transition all of its European-style cash- settled options on the S&P 500 Index to A.M. settlement. 9 In 1993, the Commission approved a rule allowing Cboe Options to list P.M.-settled options on certain broad-based indices, including the S&P 500, expiring at the end of each calendar quarter ("Quarterly Index Expirations") (since adopted as permanent). In 10 September 2010, the Commission approved a rule change that established a pilot program under which the Exchange is permitted to list P.M.-settled options on broad-based indexes to expire on (a) any Friday of the month, other than the third Friday-of-the-month, and (b) the last trading day of the month. On January 14, 2016, the Commission approved a Cboe 11 Options proposal to expand the pilot program to allow P.M.-settled options on broad-based indexes to expire on any Wednesday of month, other than those that coincide with an EOM. 12 On August 10, 2016, the Commission approved a Cboe Options proposal to expand the pilot program to allow P.M.-settled options on broad-based indexes to expire on any Monday of month, other than those that coincide with an EOM. On April 12, 2022, the Commission 13 approved a Cboe Options proposal to expand the pilot program to allow P.M.-settled SPX options to also expire on Tuesday or Thursday. On September 15, 2022, the Commission 14

See Securities Exchange Act Release No. 31800 (February 1, 1993), 58 FR 7274 (February 5, 1993) 10 (SR-CBOE-92-13); and see Rule 4.13(a)(2)(B); see also Securities Exchange Act Release Nos. 54123 (July 11, 2006), 71 FR 40558 (July 17, 2006) (SR-CBOE-2006-65); and 60164 (June 23, 2009), 74 FR 31333 (June 30, 2009) (SR-CBOE-2009-029). See Securities Exchange Act Release 62911 (September 14, 2010), 75 FR 57539 (September 21, 11

1. (order approving SR-CBOE-2009-075). See Securities Exchange Act Release 76909 (January 14, 2016), 81 FR 3512 (January 21, 2016) 12 (order approving SR-CBOE-2015-106). See Securities Exchange Act Release 78531 (August 10, 2016), 81 FR 54643 (August 16, 2016) 13 (order approving SR-CBOE-2016-046). See Securities Exchange Act Release 94682 (April 12, 2022) (order approving SR-CBOE- 2022-14

Page 22 of 36 approved a Cboe Options proposal to expand the pilot program to allow P.M.-settled XSP options to similarly expire on Tuesday or Thursday. On July 27, 2023, the Commission 15 approved a Cboe Options proposal to make the program permanent and permit the Exchange to list P.M.-settled options on any broad-based index eligible for standard trading that expire on: (1) any Monday, Wednesday, or Friday (other than the third Friday-of-the-month or days that coincide with an end-of-month expiration and, with respect to SPX and XSP options any Tuesday or Thursday and (2) the last trading day of the month. Subsequently, in November 16 2023, the Commission approved a Cboe Options proposal to permit P.M.-settled options on any broad-based index eligible for standard options trading that expire on Tuesday or Thursday. 17 Current Offerings Currently, under the Nonstandard Expirations Program set forth in Rule 4.13(e), the Exchange may open for trading (1) Weekly Expirations on any broad-based index eligible for standard options trading and on CBTX, MBTX, and the Cboe Magnificent 10 Index to expire on any Monday, Tuesday, Wednesday, Thursday, or Friday (other than the third Friday-of- the-month or days that coincide with an EOM expiration) and (2) EOMs on any broad-based index eligible for standard options trading and on CBTX, MBTX, and the Cboe Magnificent 10 Index to expire on last trading day of the month. Further, under its rules, with respect to SPX options, the Exchange may open for trading standard monthly expirations with A.M.-settlement on the third Friday-of the-

005). See Securities Exchange Act Release 95795 (September 21, 2022) (order approving SR-CBOE- 15 2022-039). See Securities Exchange Act Release 98008 (July 27, 2023) (order approving SR-CBOE-2023-020). 16 See Securities Exchange Act Release No. 98957 (November 15, 2023). 17

Page 23 of 36 month, Weekly Expirations with P.M.-settlement (including P.M.-Settled Third Friday 1819 Index Options); and EOM expirations with P.M.-settlement. 2021 The Exchange now proposes to amend its rules to permit the listing of A.M.-Settled Weekly and EOM Expirations on SPX options. Proposal The Exchange proposes to amend Rule 4.13(e), which governs its Nonstandard Expirations Program ("Program"), to permit A.M.-settled SPX options that expire (1) on any Monday, Tuesday, Wednesday, Thursday, or Friday (other than the third Friday-of- the-month ("Expiration Friday") or days that coincide with an EOM expiration) ("A.M.- Settled Weekly Expirations") and (2) EOMs. A.M.-Settled Weekly Expirations and EOM Expirations on SPX are subject to all provisions of Rule 4.13 and treated the same as A.M.-settled options on SPX that expire on the third Friday of the expiration month, as well as P.M.-settled Weekly and EOM SPX options. The maximum number of expirations that may be listed for each A.M.-Settled Weekly Expiration on SPX options (i.e., a A.M.-Settled Monday expiration, A.M.-Settled Tuesday expiration, A.M.-Settled Wednesday expiration, A.M.-Settled Thursday expiration, or A.M.-Settled Friday expiration, as applicable) and each A.M.-Settled EOM 22

See Rule 4.13(a)(2) and (3). 18 See Rule 4.13(e)(1) 19 See Rule 4.13, Interpretation and Policy .13. 20 See Rule 4.13(e)(2) 21 As part of the proposed changes, the Exchange proposes conforming amendments to Rules 22 4.13(e)(1) and (2) to replace certain existing references to "Weekly Expirations" with "P.M.-settled Weekly Expirations," to reflect that those provisions are applicable to P.M.-settled options series and to distinguish them from the A.M.-Settled Weekly Expirations proposed. For the avoidance of doubt, there are no changes to the P.M.-Settled Weekly Expirations or EOMs as a result of the proposed change. The Exchange also proposes to remove language stating that Weekly Expirations and EOMs shall be P.M-settled.

Page 24 of 36 Expiration on SPX options is the same as the maximum number of expirations permitted in Rule 4.13(a)(2) for standard options on SPX. A.M.-Settled Weekly Expirations on SPX need not be for consecutive Monday, Tuesday, Wednesday, Thursday, or Friday expirations as applicable; however, the expiration date of a nonconsecutive expiration may not be beyond what would be considered the last expiration date if the maximum number of expirations were listed consecutively. A.M.-Settled Weekly Expirations that are first listed in SPX options may expire up to four weeks from the actual listing date. Similarly, A.M.-Settled EOMs on SPX need not be for consecutive end of month expirations; however, the expiration date of a non-consecutive expiration may not be beyond what would be considered the last expiration date if the maximum number of expirations were listed consecutively. A.M.-Settled EOMs that are first listed in SPX options may expire up to four weeks from the actual listing date. If the Exchange lists A.M.-Settled EOMs and A.M.-Settled Weekly Expirations on SPX, the Exchange will list an A.M.-Settled EOM instead of a A.M.-Settled Weekly Expiration that expires on the same day in the given class. Other expirations in the same class are not counted as part of the maximum number of Weekly or EOM Expirations for SPX. If the Exchange is not open for business on a respective Monday, the normally Monday expiring Weekly Expirations will expire on the following business day. If the Exchange is not open for business on a respective Tuesday, Wednesday, Thursday, or Friday, the normally Tuesday, Wednesday, Thursday, or Friday expiring Weekly Expirations will expire on the previous business day. If two different Weekly Expirations on an index would expire on the same day because the Exchange is not open for business on a certain weekday, the Exchange will list only one of such Weekly Expirations.

Page 25 of 36 In connection with proposed change, the Exchange proposes to amend Rule 5.1(b)(2)(C), which currently states in relevant part that on their last trading day, Regular Trading Hours for Nonstandard Expirations are from 9:30 a.m. to 4:00 p.m. Specifically, the Exchange proposes to replace the reference to "Nonstandard Expirations" with "P.M.- Settled Nonstandard Expirations." The Exchange believes that the introduction of A.M.-Settled Weekly Expirations and EOMs on SPX options will provide market participants with additional hedging tools and greater trading opportunities. By offering expanded expirations along with the current

and hedging strategies and manage their portfolios. The Exchange believes that expanding the SPX options offering to include A.M.- Settled Weekly and EOM Expirations would allow market participants to purchase an option based on their needed timing and allow them to tailor their investment or hedging needs more effectively. Further, the Exchange believes there is sufficient investor interest and demand in A.M-Settled Weekly and EOM Expirations on SPX options to warrant inclusion in the Program and in the Rules, and that the Program and the Rules, as amended, will continue to provide investors with additional means of managing their risk exposures and carrying out their investment objectives. With regard to the impact of this proposal on system capacity, the Exchange has analyzed its capacity and represents that it believes that the Exchange has the necessary

Page 26 of 36 systems capacity to handle any potential additional traffic associated with trading of A.M- Settled Weekly Expirations and EOM Expirations for SPX options. The Options Price Reporting Authority ("OPRA") also informed the Exchange it believes it has the necessary systems capacity to handle the additional traffic associated with the listing of A.M-Settled Weekly Expirations and EOM Expirations for SPX options that would result from this proposed rule change. The Exchange does not believe that its Trading Permit Holders ("TPHs") will experience any capacity issues as a result of this proposal and represents that it will monitor the trading volume associated with any possible additional SPX options series listed as a result of this proposal and the effect (if any) of these additional series on market fragmentation and on the capacity of the Exchange's automated systems. In addition to this, the Exchange believes that its existing surveillance and reporting safeguards in place are adequate to deter and detect possible manipulative behavior which might arise from listing and trading A.M-Settled Weekly and EOM Expirations for SPX options (as the Exchange currently applies these to SPX options that are A.M.-settled with standard expirations, as well as P.M.-settled with weekly, monthly and quarterly expirations) and will support the protection of investors and the public interest. Furthermore, the trading of A.M-Settled Weekly and EOM Expirations for SPX options will be subject to the same rules that currently govern the trading of these options with other expirations, including governing customer accounts, position and exercise limits, 23 margin requirements and trading halt procedures, among other Rules, which are designed to prevent fraudulent and manipulative acts and practices.

There are no position or exercise limits for SPX options, per Rules 8.31(a) and 8.42(b), respectively. 23

Page 27 of 36 In response to any potential concerns that disruptive trading conduct could occur as a result of the concurrent listing and trading of two index option products based on the same index but for which different settlement methodologies exist (i.e., one is A.M.-settled and one is P.M.-settled), the Exchange notes that for roughly five years (1987 to 1992) the Exchange listed and traded an A.M.-settled S&P 500 index option under symbol NSX at the same time it listed and traded a P.M.-settled S&P 500 index option under symbol SPX, and the Exchange did not observe any market disruptions as a result of offering both products. 24 The adoption of trading of A.M-Settled Weekly and EOM Expirations on the S&P 500 Index on the same exchange as A.M.-settled (with standard expirations) and P.M- settled options on the S&P 500 Index would provide greater spread opportunities. This manner of trading allows a market participant to take advantage of the different expiration times, which provides expanded trading opportunities. In the options market currently, market participants regularly trade similar or related products in conjunction with each other, which contributes to overall market liquidity.

1. Statutory Basis The Exchange believes the proposed rule change is consistent with the Securities Exchange Act of 1934 (the "Act") and the rules and regulations thereunder applicable to the Exchange and, in particular, the requirements of Section 6(b) of the Act. Specifically, 25 the Exchange believes the proposed rule change is consistent with the Section 6(b)(5) 26

Today, A.M.-settled SPX options and P.M.-Settled SPX options trade under different symbols (i.e., 24 SPX and SPXW, respectively). 15 U.S.C. 78f(b). 25 15 U.S.C. 78f(b)(5). 26

Page 28 of 36 requirements that the rules of an exchange be designed to prevent fraudulent and manipulative acts and practices, to promote just and equitable principles of trade, to foster cooperation and coordination with persons engaged in regulating, clearing, settling, processing information with respect to, and facilitating transactions in securities, to remove impediments to and perfect the mechanism of a free and open market and a national market system, and, in general, to protect investors and the public interest. Additionally, the Exchange believes the proposed rule change is consistent with the Section 6(b)(5) 27 requirement that the rules of an exchange not be designed to permit unfair discrimination between customers, issuers, brokers, or dealers. In particular, the Exchange believes that the proposed rule change will remove impediments to and perfect the mechanism of a free and open market and a national market system, and, in general, to protect investors and the public interest. The Exchange believes that the introduction of A.M-Settled Weekly and EOM Expirations for SPX options will provide investors with expanded hedging tools and greater trading opportunities. As a result, investors will have additional means to manage their risk exposures and carry out their investment objectives. By offering expanded expirations along with the current

and hedging strategies and manage their portfolios. For example, the proposed rule change will allow market participants to spread risk across more trading days and incorporate daily

Id. 27

Page 29 of 36 changes in the markets, which may reduce the premium cost of buying protection. The Exchange represents that it believes that it has the necessary systems capacity to support any additional traffic associated with trading of A.M-Settled Weekly and EOM Expirations for SPX options and does not believe that its TPHs will experience any capacity issues as a result of this proposal. The Exchange does not believe that the addition of A.M-Settled Weekly and EOM Expirations for SPX options to the Nonstandard Expirations Program will raise any prohibitive regulatory concerns, nor adversely impact fair and orderly markets on expiration days. The Exchange has not experienced any meaningful regulatory concerns, nor adverse impact on fair and orderly markets, in connection with these programs, nor with the listing of standard A.M.-settled expirations for SPX options along with P.M.- settled expirations, (as the Exchange currently does) and is unaware of any reason why adding A.M.-settled options with expirations each day of the week for SPX options would be create such concerns or impact. Particularly, the Exchange does not believe increases in the number of options series and expirations will have any significant adverse economic impact on the futures, index, or underlying index component securities markets. The Exchange believes that the proposed rule change will provide investors with greater trading and hedging opportunities and flexibility, allowing them to transact in SPX options in a manner more aligned with specific timing needs and more effectively tailor their investment and hedging objectives by listing these A.M-settled options that expire each trading day of the week, in addition to options that expire at on the third Friday-of-the- month or that are P.M-settled and expire daily, monthly and quarterly (which, as noted above, the Exchange may already do pursuant to separate listing programs in the Rules).

Page 30 of 36 The Commission previously recognized the benefits of A.M-settlement for broad- based index options when it approved Cboe Options' proposal to transition most of its cash- settled index options, including on the S&P 500 Index, to A.M.-settlement. Specifically, the 28 Commission identified several advantages of opening price settlement, including: (1) the ability to facilitate contra-side interest to alleviate order imbalances caused by the unwinding of index-related positions, without requiring market participants to assume overnight or weekend position risk; (2) providing market participants the remainder of the trading day to adjust to price movements resulting from expiration activity and assess whether those movements reflect changes in fundamental value or short-term supply and demand; and (3) allowing stock positions associated with expiring contracts to benefit from orderly opening procedures designed to facilitate price discovery. 29 The Exchange believes the benefits set forth by the Commission are not unique to standard monthly expirations. Specifically, as daily and end-of-month P.M.-settled SPX expirations have grown in prominence, the same concerns regarding order imbalance and price discovery could arise at any expiration (not just the third Friday of each month). Accordingly, the Exchange believes that extending A.M.-settlement to daily and end-of- month expirations is consistent with the Commission's own rationale, and would provide market participants with those same protections across the full expiration calendar. Finally, the Exchange believes its proposal to introduce changes to specify between A.M.-Settled Weekly Expirations and P.M.-Settled Weekly Expirations are reasonable, as

Page 31 of 36 they provide clarity within the Exchange rules, thereby mitigating potential investor confusion.

1. Self-Regulatory Organization's Statement on Burden on Competition The Exchange does not believe that the proposed rule change will impose any burden on competition that is not necessary or appropriate in furtherance of the purposes of the Act. The Exchange does not believe that the proposed rule change will impose any burden on intramarket competition that is not necessary or appropriate in furtherance of the purposes of the Act because A.M.-settled SPX options with Weekly and EOM Expirations will be available to all market participants. By listing SPX options with these expirations (in addition to the standard Expiration Friday expirations (A.M.-settled) and weekly and EOM expirations (P.M.-settled) that are currently listed), the proposed rule change will provide all investors that participate in the markets for these index options available for trading on the Exchange with greater trading and hedging opportunities and flexibility to meet their investment and hedging needs. The Exchange does not believe that the proposal to list A.M.-settled SPX options with Weekly and EOM Expirations will impose any burden on intermarket competition that is not necessary or appropriate in furtherance of the purposes of the Act because these options are proprietary Exchange products. To the extent that the addition of these expirations for SPX options makes the Exchange a more attractive marketplace to market participants at other exchanges, such market participants are free to elect to become market participants on the Exchange. Further, to other exchanges offer "nonstandard" expirations for index options and are welcome to similarly propose to list options on those 30

See, e.g., Nasdaq PHLX, LLC Options 4A, Section 12 (permitting nonstandard expirations, 30 including daily expirations for Nasdaq-100 index options and Nasdaq 100-Micro index options);

Page 32 of 36 index or equity products with similar expirations as proposed herein. Finally, as noted above, SPX options with these expirations will trade in the same manner as other options with these expirations currently do.

1. Self-Regulatory Organization's Statement on Comments on the Proposed
   Rule Change Received from Members, Participants, or Others The Exchange neither solicited nor received written comments on the proposed rule change.

2. Date of Effectiveness of the Proposed Rule Change and Timing for Commission
   Action Within 45 days of the date of publication of this notice in the Federal Register or within such longer period up to 90 days (i) as the Commission may designate if it finds such longer period to be appropriate and publishes its reasons for so finding or (ii) as to which the Exchange consents, the Commission will:

3. by order approve or disapprove such proposed rule change, or

4. institute proceedings to determine whether the proposed rule change should
   be disapproved.

5. Solicitation of Comments
   Interested persons are invited to submit written data, views and arguments concerning the foregoing, including whether the proposed rule change is consistent with the Act. Comments may be submitted by any of the following methods: Electronic Comments:

• Use the Commission's internet comment form (https://www.sec.gov/rules/sro.shtml); or

and Nasdaq ISE, LLC Options 4, Section 5, Supplementary Material .03 (permitting short-term options series with daily expirations for SPY and QQQ options).

Page 33 of 36

• Send an email to rule-comments@sec.gov. Please include file number
  SR-CBOE-2026-037 on the subject line. Paper Comments:

• Send paper comments in triplicate to Secretary, Securities and Exchange
  Commission, 100 F Street NE, Washington, DC 20549-1090. All submissions should refer to file number SR-CBOE-2026-037. This file number should be included on the subject line if email is used. To help the Commission process and review your comments more efficiently, please use only one method. The Commission will post all comments on the Commission's internet website (https://www.sec.gov/rules/sro.shtml). Copies of the filing will be available for inspection and copying at the principal office of the Exchange. Do not include personal identifiable information in submissions; you should submit only information that you wish to make available publicly. We may redact in part or withhold entirely from publication submitted material that is obscene or subject to copyright protection. All submissions should refer to file number SR-CBOE-2026-037 and should be submitted on or before [INSERT DATE 21 DAYS AFTER DATE OF PUBLICATION IN THE FEDERAL REGISTER]. For the Commission, by the Division of Trading and Markets, pursuant to delegated authority. 31 Sherry R. Haywood, Assistant Secretary.

17 CFR 200.30-3(a)(12). 31

Page 34 of 36 EXHIBIT 5 (additions are underlined; deletions are [bracketed])

• ---

  Rules of Cboe Exchange, Inc.

• ---

  Rule 4.13. Series of Index Options (a) - (d) No changes. (e) Nonstandard Expirations Program. (1) Weekly Expirations. The Exchange may open for trading P.M.-Settled Weekly Expirations on any broad-based index eligible for standard options trading and on CBTX, MBTX, and the Cboe Magnificent 10 Index or A.M.-Settled Weekly Expirations on SPX, to expire on any Monday, Tuesday, Wednesday, Thursday, or Friday (other than the third Friday-of-the-month or days that coincide with an EOM expiration). Weekly Expirations shall be subject to all provisions of this Rule and treated the same as options on the same underlying index that expire on the third Friday of the expiration month; provided, however, that [Weekly Expirations shall be P.M.-settled and ]new series in P.M.-Settled Weekly Expirations may be added up to and including on the expiration date for an expiring Weekly Expiration. The maximum number of expirations that may be listed for each Weekly Expiration (i.e., a A.M.-Settled Monday expiration, P.M.-Settled Monday expiration, A.M.- Settled Tuesday expiration, P.M.-Settled Tuesday expiration, A.M.-Settled Wednesday expiration, P.M.-Settled Wednesday expiration, A.M.-Settled Thursday expiration, P.M.-Settled Monday expiration, [or ]A.M.-Settled Friday expiration or P.M-Settled Friday expiration, as applicable) in a given class is the same as the maximum number of expirations permitted in Rule 4.13(a)(2) for standard options on the same index. Weekly Expirations need not be for consecutive Monday, Tuesday, Wednesday, Thursday, or Friday expirations as applicable; however, the expiration date of a non-consecutive expiration may not be beyond what would be considered the last expiration date if the maximum number of expirations were listed consecutively. Weekly Expirations that are first listed in a given class may expire up to four weeks from the actual listing date. If the Exchange lists EOMs and Weekly Expirations as applicable in a given class, the Exchange will list an EOM instead of a Weekly Expiration that expires on the same day in the given class. Other expirations in the same class are not counted as part of the maximum number of Weekly Expirations for an applicable index class. If the Exchange is not open for business on a respective Monday, the normally Monday expiring Weekly Expirations will expire on the following business day. If the Exchange is not open for business on a respective Tuesday, Wednesday, Thursday, or Friday, the normally

Page 35 of 36 Tuesday, Wednesday, Thursday, or Friday expiring Weekly Expirations will expire on the previous business day. If two different Weekly Expirations would expire on the same day because the Exchange is not open for business on a certain weekday, the Exchange will list only one of such Weekly Expirations. (2) End of Month ("EOM") Expirations. The Exchange may open for trading P.M.- Settled EOMs on any broad-based index eligible for standard options trading and on CBTX, MBTX, and the Cboe Magnificent 10 Index or A.M.-Settled EOMs on SPX, to expire on last trading day of the month. EOMs shall be subject to all provisions of this Rule and treated the same as options on the same underlying index that expire on the third Friday of the expiration month; provided, however, that [EOMs shall be P.M.-settled and ]new series in P.M-Settled EOMs may be added up to and including on the expiration date for an expiring EOM. The maximum number of expirations that may be listed for EOMs (i.e., a A.M.-Settled EOM Expiration or P.M.-Settled EOM expiration) in a given class is the same as the maximum number of expirations permitted in Rule 4.13(a)(2) for standard options on the same index. EOM expirations need not be for consecutive end of month expirations; however, the expiration date of a non-consecutive expiration may not be beyond what would be considered the last expiration date if the maximum number of expirations were listed consecutively. EOMs that are first listed in a given class may expire up to four weeks from the actual listing date. Other expirations in the same class are not counted as part of the maximum numbers of EOM expirations for an index class (3) Weekly Expirations and EOM Trading Hours on the Last Trading Day. On the last trading day, Regular Trading Hours for expiring Weekly Expirations and EOMs are from 9:30 a.m. and 4:00 p.m. (f) Listing SPX and VIX on Group Basis. The Exchange may determine to list SPX or VIX on a group basis.

• ---

  Rule 5.1. Trading Days and Hours

• ---

  (b) Regular Trading Hours.

• ---

  (2) Index Options. Except as otherwise set forth in the Rules or under unusual conditions as may be determined by the Exchange, Regular Trading Hours for transactions in index options are from 9:30 a.m. to 4:15 p.m., except as follows:

• ---

  (C) On their last trading day, Regular Trading Hours for the following options are from 9:30 a.m. to 4:00 p.m.:

Page 36 of 36 Cboe S&P 500 AM/PM Basis options Index Options with P.M.- Settled Nonstandard Expirations (i.e., Weeklys and EOMs), Monthly Options Series, Quarterly Options Series, and Quarterly Expirations (i.e., QIXs)

• * * * *