NYSE Chicago Rebrands to Texas in Rule Updates
Published Date: 8/27/2025
Notice
Summary
Investors Exchange (IEX) is updating its rules to reflect that NYSE Chicago has changed its name to NYSE Texas and to add a new trading center called 24X National Exchange LLC. These changes help IEX route trades and use market data correctly as 24X prepares to launch. The updates take effect immediately and won’t impact fees or costs for traders.
Analyzed Economic Effects
1 provisions identified: 1 benefits, 0 costs, 0 mixed.
IEX Adds 24X and SIP Market Data
If you trade or invest, IEX will add 24X National Exchange LLC to the list of away trading centers it routes orders to and will use SIP market data (CQS SIP for consolidated tape securities and UQDF SIP for Nasdaq UTP securities) as the primary source to determine Top of Book quotes and the NBBO. The Exchange filed the change on August 13, 2025 and made it operative upon filing, in anticipation of 24X's planned launch on September 29, 2025. IEX states these updates will not impact fees or costs for traders.
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