Texas Stock Exchange LLC (“TXSE”) is providing advance notice to market participants of its intent to conduct coordinated testing with the Consolidated Tape Association (“CTA”) and Unlisted Trading Privileges (“UTP”) Securities Information Processors (“SIPs”) in preparation for its planned exchange launch.
Testing Dates
TXSE intends to participate in SIP testing on Saturday’s, February 28, 2026, April 11, 2026, May 9, 2026, June 6, 2026, and June 27, 2026. Additional testing dates may be scheduled and communicated to participants as needed.
Participant Identifier
For purposes of both CTA and UTP SIP testing, TXSE will utilize the following Participant Identifier:
Participant ID / Exchange Code: F
Market participants should ensure their systems are configured to recognize and process trade and quotation messages associated with this identifier.
Scope of Testing
During the testing session, TXSE will transmit test quotation and trade messages through the CTA and UTP SIPs.
CTA Details
For CTA testing, TXSE messages will be processed and disseminated via the Consolidated Quotation System (CQS) and Consolidated Tape System (CTS). TXSE quotes will be identified using Participant ID “F” and will be included in applicable SIP calculations during the test period.
UTP Details
For UTP testing, TXSE quotation and trade messages will be disseminated via the UTP SIP data feeds and identified using the market center originator identifier value “F.”
Participant Action
Firms that wish to participate in or observe this testing should confirm that their market data systems, internal applications, and vendor solutions are prepared to receive CTA and UTP SIP messages associated with TXSE.