Is Cboe Index Options open on Sunday 31 May 2026?
No
No. Cboe Index Options does not trade on Sundays. It reopens on Monday 1 June 2026.
No trading
See also Cboe Index Options hours today and Cboe Index Options holidays 2026
Related markets on 31 May 2026
| NYSE | No trading |
| Nasdaq | No trading |
| CME Equity | No trading |
| Cboe Options | No trading |
| IEX | No trading |
 TSX | No trading |
 B3 | No trading |
 LSE | No trading |
 Xetra | No trading |
 Euronext Paris | No trading |