IEX Joins the Line Updating Rules for Texas Exchange
Published Date: 6/3/2026
Notice
Summary
IEX is updating its rules to include the new Texas Stock Exchange (TXSE) as a trading partner and data source. This change helps IEX route trades and get price info from TXSE once it launches, making trading smoother for investors. The update is effective immediately, with no extra costs for users.
Analyzed Economic Effects
2 provisions identified: 2 benefits, 0 costs, 0 mixed.
IEX will route eligible orders to TXSE
If you have investments, IEX is adding the Texas Stock Exchange (TXSE) to the list of away trading centers to which it routes eligible orders. TXSE anticipates commencing trading on July 6, 2026, and IEX will route to TXSE when TXSE's best-priced displayed quotation is a Protected Quotation under Regulation NMS Rule 600(b)(62) and Rule 611; the rule change is operative upon filing (filed May 21, 2026).
IEX will use SIP data for TXSE price references
If you have investments, IEX will use securities information processor (SIP) data as the primary market data source to determine TXSE's Top of Book quotations, the national best bid and offer (NBBO), and for certain regulatory, reporting, and compliance systems. Specifically, IEX will use CQS SIP data for securities under the Consolidated Quotation Services and Consolidated Tape Association plans and UQDF SIP data for securities under the Nasdaq Unlisted Trading Privileges plan; this change is operative upon TXSE's launch (TXSE anticipates July 6, 2026) and the filing was submitted May 21, 2026.
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