OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

P $100.00 Put

P280121P00100000

Latest saved OI1,024Oct 23, 2026
Last change+980vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
P $100.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 1,0245120 2026-10-02: 42 OI2026-10-05: 42 OI2026-10-06: 40 OI2026-10-07: 40 OI2026-10-08: 40 OI2026-10-09: 45 OI2026-10-13: 46 OI2026-10-14: 46 OI2026-10-15: 46 OI2026-10-16: 45 OI2026-10-21: 44 OI2026-10-23: 1,024 OI Oct 02, 2026Oct 23, 2026

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

P contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 20261,024+980
Oct 21, 2026Viewing44-1
Oct 16, 202645-1
Oct 15, 2026460
Oct 14, 2026460
Oct 13, 202646+1
Oct 09, 202645+5
Oct 08, 2026400
Oct 07, 2026400
Oct 06, 202640-2
Oct 05, 2026420
Oct 02, 202642No prior observation