Nasdaq Texas Extends Dedicated GPS Antenna Service Termination Deadline to April 30, 2026

Nasdaq Texas, LLC filed a proposed rule change with the SEC (File No. SR-NasdaqTX-2026-009) on March 23, 2026, to extend the termination date for its dedicated GPS antenna co-location service from April 1, 2026, to April 30, 2026. The dedicated GPS antenna service, offered at the Exchange's NY11 data center in Carteret, NJ, allows co-located firms to synchronize their trading systems to U.S. Government GPS atomic clock time. New orders for the dedicated service were already halted on September 30, 2025. The extension is necessitated by infrastructure delays in deploying the replacement shared GPS antenna network. The new shared GPS network completion date slipped from March 1, 2026, to March 27, 2026, leaving customers who elected to migrate with insufficient time to test the new service before the originally scheduled April 1 termination. The one-month extension ensures an orderly transition. During the extension period through April 30, 2026, existing dedicated GPS antenna customers will continue to be charged the recurring monthly fee of $600, prorated as appropriate. The installation fee of $1,500 will not be charged during this period since no new orders are permitted. Participation in the extended service period is entirely voluntary — customers may terminate early at any time. Approximately 49% of Nasdaq Texas co-location customers subscribe to the GPS time synchronization service, with most already having opted for the shared antenna option. The rule change took immediate effect under Section 19(b)(3)(A)(ii) of the Securities Exchange Act of 1934, though the SEC retains authority to suspend it within 60 days. Public comments are due by April 22, 2026.

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