Cboe Holiday Reminder – Modified Trading Hours on Monday, September 7, 2026

Reference ID: C2026081705

Applicable Cboe Exchanges: BYX Equities, BZX Equities, EDGA Equities, EDGX Equities, BZX Options, Cboe Options, C2 Options, EDGX Options

Overview

The table below outlines the modified trading schedules for the Cboe Options Exchanges (Cboe Options (C1), C2, BZX, and EDGX Options) and the Cboe U.S. Equities Exchanges (BYX, BZX, EDGA, and EDGX Equities) in observance of Labor Day. All times referenced in this notice are ET.

Table 1. Modified Trading Schedule
ExchangeSunday, September 6, 2026 Monday, September 7, 2026 (holiday) Tuesday, September 8, 2026
C1 - Proprietary RUT, SPX, VIX, and XSP Options OnlyGTH trading from 8:15 p.m. to 11:30 a.m. (next day).
  • GTH close at 11:30 a.m.
  • No RTH or Curb trading will occur.
  • GTH trading from 8:15 p.m. to 9:25 a.m. (next day).
Normal operating hours for all products.
C1 - Non-RUT/SPX/VIX/XSP Options ProductsClosedClosedNormal operating hours for all products.
C2, BZX, and EDGX OptionsClosedClosedNormal operating hours for all products.
BYX, BZX, EDGA, and EDGX EquitiesClosedClosedNormal operating hours for all products.

GTH Catastrophic Filings

Each GTH session is treated as a discrete session during a holiday. Customers will have until 1:30 p.m. on Monday, September 7, 2026, to file catastrophic errors on trades during the 8:15 p.m. Sunday to 11:30 a.m. Monday GTH session. For trades during the 8:15 p.m. Monday to 9:25 a.m. Tuesday GTH session, customers will have until 11:25 a.m. on Tuesday, September 8, 2026, to file catastrophic errors.

Testing Opportunities

The C1 certification environment will be available for simulated U.S. Holiday testing on Monday, August 24, 2026, with a trade date of Tuesday, August 25, 2026.

Table 2. Simulated Holiday Testing Schedule (C1)
ExchangeSunday, August 23, 2026Monday, August 24, 2026 (simulated holiday)Tuesday, August 25, 2026
C1 Certification - Proprietary RUT, SPX, VIX, and XSP Options Only GTH trading from 8:15 p.m. to 11:30 a.m. (next day)
  • GTH close at 11:30 a.m.
  • No RTH or Curb trading will occur.
  • GTH trading from 8:15 p.m. to 9:25 a.m. (next day)
Normal operating hours for all products.
C1 Certification - Non-RUT/SPX/VIX/XSP Options ProductsClosedClosedNormal operating hours for all products.

Additional Information

Contact Information

Please contact the Cboe Trade Desk or Cboe Operations Support Center for support or with any questions.

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Cboe Trade Desk: 913.815.7001 | [email protected]

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