OITracker Cboe delayed data

Contract OI history

Back to ON

Jan 21, 2028 EXPIRATION

ON $45.00 Put

ON280121P00045000

Latest saved OI568Oct 23, 2026
Last change+3vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ON $45.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 5862930 2026-10-09: 586 OI2026-10-13: 565 OI2026-10-14: 565 OI2026-10-15: 565 OI2026-10-16: 565 OI2026-10-21: 565 OI2026-10-23: 568 OI Oct 09, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

ON contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing568+3
Oct 21, 20265650
Oct 16, 20265650
Oct 15, 20265650
Oct 14, 20265650
Oct 13, 2026565-21
Oct 09, 2026586No prior observation