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Nasdaq MRX Rule Change Amends Auction Mechanisms

The SEC published a notice that Nasdaq MRX, LLC filed a proposed rule change (SR-MRX-2026-16) to permit Market Maker orders to be solicited into auction mechanisms. The Exchange seeks to allow Market Maker orders to trade against Agency Orders within the Facilitation Mechanism, Solicited Order Mechanism (SOM), and Price Improvement Mechanism (PIM). The SEC is soliciting public comments on the proposed rule change.

Nasdaq Harmonizes Options Market Data Feeds

The Nasdaq Stock Market LLC filed a proposed rule change with the SEC to harmonize options market data feeds with those of its affiliated exchanges Nasdaq ISE, LLC, Nasdaq PHLX, LLC, Nasdaq GEMX, LLC, and Nasdaq MRX, LLC. The change introduces two new data feeds (Order Feed and Trades Feed) and renames the existing ITTO feed to Depth of Market Feed, effective immediately upon filing with an operative date on or before August 2026.