OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

ON $75.00 Put

ON261218P00075000

Latest saved OI887Oct 23, 2026
Last change-37vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ON $75.00 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. 9244620 2026-10-09: 790 OI2026-10-13: 814 OI2026-10-14: 814 OI2026-10-15: 802 OI2026-10-16: 858 OI2026-10-21: 924 OI2026-10-23: 887 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, 2026Viewing887-37
Oct 21, 2026924+66
Oct 16, 2026858+56
Oct 15, 2026802-12
Oct 14, 20268140
Oct 13, 2026814+24
Oct 09, 2026790No prior observation