Trader | TXSE-2026-026 | Jul 23, 2026
Updated Test Schedule – Saturday, July 25, 2026
Dear Member,
To align with the industry-wide Market-Wide Circuit Breaker (MWCB) Level 1 and Level 2 testing, TXSE will modify its regular Saturday test schedule on July 25, 2026.
The updated trading session schedule is as follows:
| Session | Time (ET) |
|---|---|
| Pre-Market | 8:00 a.m. – 9:30 a.m. |
| Regular Trading | 9:30 a.m. – 12:00 p.m. |
| Post-Market | 12:00 p.m. – 1:00 p.m. |
This revised schedule aligns TXSE testing with the industry-wide MWCB test, enabling participants to validate their systems during both events.
As previously announced, TXSE will also conduct opening and closing auctions in the following TXSE-listed test securities: ZZZTT, ZZZTE, ZZZTX, ZZZTA, and ZZZTS. The Opening Auction is scheduled for 9:30 a.m. and the Closing Auction is scheduled for 12:00 p.m. ET.
TXSE technical specifications which included auction functionality can be found at https://www.txse.com/trading#technical-specifications.
The full TXSE testing schedule, including upcoming production testing opportunities, is available at https://www.txse.com/trading#trading.
All other aspects of the previously announced July 25 test remain unchanged.
Sincerely,
TXSE Market Operations