Cboe Holiday Reminder - Modified Trading Hours on Friday, June 19, 2026

Reference ID: C2026052801

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 Juneteenth National Independence Day. All times referenced in this notice are ET.

Table 1. Modified Trading Schedule
Exchange Thursday, June 18, 2026 Friday, June 19, 2026 (holiday)Monday, June 22, 2026
C1 - Proprietary RUT, SPX, VIX, and XSP Options Only
  • GTH close at 9:25 a.m.
  • RTH trading from 9:30 a.m. to 4:15 p.m.
  • Curb trading from 4:15 p.m. to 5:00 p.m.
  • GTH trading from 8:15 p.m. to 11:30 a.m. (trade date June 22, 2026)
  • GTH close at 11:30 a.m. (trade date June 22, 2026)
  • No RTH or Curb trading will occur.
 Normal operating hours for all products
C1 - Non-RUT/SPX/VIX/XSP Options ProductsNormal operating hours for all productsClosedNormal operating hours for all products
C2, BZX, and EDGX OptionsNormal operating hours for all productsClosedNormal operating hours for all products
BYX, BZX, EDGA, and EDGX Equities Normal operating hours for all productsClosedNormal operating hours for all products

GTH Catastrophic Filings

For trades during the 8:15 p.m. Thursday to 11:30 a.m. Friday GTH session, customers will have until 1:30 p.m. on Friday, June 19, 2026 to file catastrophic errors.

Testing Opportunities

The C1 certification environment will be available for simulated U.S. Holiday testing on Friday, June 5, 2026, with a trade date of Monday, June 8, 2026.

Table 2. Simulated Holiday Testing Schedule (C1)
ExchangeThursday, June 4, 2026Friday, June 5, 2026 (simulated holiday)Monday, June 8, 2026
C1 Certification - Proprietary RUT, SPX, VIX, and XSP Options Only
  • GTH close at 9:25 a.m.
  • RTH trading from 9:30 a.m. to 4:15 p.m.
  • Curb trading from 4:15 p.m. to 5:00 p.m.
  • GTH trading from 8:15 p.m. to 11:30 a.m. (trade date June 8, 2026)
  • GTH close at 11:30 a.m. (trade date June 8, 2026)
  • No RTH or Curb trading will occur.
 Normal operating hours for all products
C1 Certification - Non-RUT/SPX/VIX/XSP Options Products Normal operating hours for all productsClosedNormal 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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