Is Cboe Index Options open on Monday 31 May 2027?
No
No. Cboe Index Options is closed on Monday 31 May 2027 for Memorial Day. It reopens on Tuesday 1 June 2027.
Memorial Day
See also Cboe Index Options hours today and Cboe Index Options holidays 2027
Related markets on 31 May 2027
| NYSE | Memorial Day |
| Nasdaq | Memorial Day |
| CME Equity | – |
| Cboe Options | Memorial Day |
| IEX | Memorial Day |
 TSX | – |
 B3 | – |
 LSE | Spring Bank Holiday |
 Xetra | – |
 Euronext Paris | – |