July 2026 Symbol Rollout Schedule

Dear TXSE Member,

TXSE will bring NMS symbols into production trading in stages throughout July 2026.This communication provides the rollout schedule so your firm can plan its participation.

Production opens with test symbols only on Monday, July 6, followed by the first NMS symbols on Friday, July 10. Additional symbols are then introduced in stages through the end of the month.

The complete symbol-by-symbol rollout schedule is distributed separately as a spreadsheet.

Key Milestones

• Monday, July 6 — Test symbols only. Production opens for connectivity and order-entry validation; no live securities trade
• Friday, July 10 — Live trading begins with an initial set of symbols.
• Friday, July 31 — All NMS symbols live (expected).

Rollout Schedule

Date

Event

July 6, 2026

Production opens — test symbols only

July 10, 2026

First NMS symbols begin trading

July 14-17, 2026

Phased ramp to approximately 200 symbols

July 20-24, 2026

Broad rollout to approximately 3,000 symbols; blue chips begin trading July 23

July 31, 2026

Full market — all listed symbols live

Please note that the rollout schedule is subject to change at the Exchange's discretion, including in response to industry feedback, system readiness considerations, and other relevant operational or regulatory factors.

If you have questions or require assistance, please contact marketops@txse.com.

We look forward to working with you.

Sincerely, TXSE Market Operations