In connection with Nasdaq's Expanded 23/5 trading initiative, system hours will be extended to 9:00 p.m. ET Sunday through 8:00 p.m. ET Friday , with a daily one-hour pause from 8:00 p.m. to 9:00 p.m. ET Monday through Thursday (excluding holidays), effective December 6, 2026 .

To support this change, Nasdaq is providing the following operational guidance regarding NasdaqTrader.com data products and file availability. Participants should review the information below and make any necessary updates to internal workflows and downstream systems.

For additional information regarding the Expanded Hours framework, please refer to ETA2026-39 and ETA2026-55.

Daily Lists — No Changes

There are no changes to the timing, format, or distribution of the Daily Lists currently published on the Daily List Page.

All existing schedules and file formats will remain unchanged.

Fundamental Data — No Changes

There are no changes to the timing, format, or distribution of the Fundamental Data files currently published on the Fundamental Data Page.

All existing schedules and file formats will remain unchanged.

Reg SHO Threshold Downloadable File

The Reg SHO Threshold Downloadable downloadable file available will be refreshed and available beginning approximately 8:45 p.m. ET each evening, Sunday through Thursday, in advance of the next trading day's Global Trading Session.

Symbol Directory & Downloadable Files — Updates pending

The Symbol Directory and related downloadable files available on the Symbol Directory page will be refreshed and available beginning approximately 8:45 p.m. ET each evening, Sunday through Thursday, in advance of the next trading day's Global Trading Session.

The following files are included:

• nasdaqtraded.txt
• nasdaqlisted.txt
• NTX-Traded.txt
• PSX-Traded.txt
• otherlisted.txt
• TradingSystemAddsDeletes.txt

Important Notes

While these directory files will be refreshed beginning at approximately 8:45 p.m. ET, new symbol additions, including IPOs, will not be reflected until after 8:00 a.m. ET on the following business day. New listings remain subject to Nasdaq Listing Qualifications approval prior to the commencement of trading.

Participants should continue to retrieve these files throughout the trading day to capture intraday symbol additions and other updates distributed through TradingSystemAddsDeletes.txt.

Global Trading Session Halts List — Under Development

Nasdaq is actively developing a new halts file specific to securities subject to the rules governing the Global Trading Session (9:00 p.m. to 9:30 a.m. ET).

Our current target is to make this file available by approximately 8:45 p.m. ET each trading day during the one-hour system pause window. Additional details, including file format, halt reason codes, and distribution method, will be communicated in a future News Alert.

Questions & Support

For questions regarding these changes, please contact:

Nasdaq Trading Services
tradingservices@nasdaq.com | +1 212 231 5180

Nasdaq MarketWatch
DL-NasdaqMarketWatch@nasdaq.com | +1 800-537-3929 (U.S. Toll-Free) or +1 301-978-8500 (Outside the U.S.)

TRF Operations
TRFOPS@nasdaq.com | +1 212 231 5180