OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

AR $40.00 Put

AR280121P00040000

Latest saved OI582Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
AR $40.00 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. 7843920 2026-10-02: 781 OI2026-10-05: 781 OI2026-10-06: 784 OI2026-10-07: 784 OI2026-10-08: 784 OI2026-10-09: 784 OI2026-10-13: 784 OI2026-10-14: 784 OI2026-10-15: 602 OI2026-10-16: 582 OI2026-10-21: 582 OI2026-10-23: 582 OI Oct 02, 2026Oct 23, 2026

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

AR contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing5820
Oct 21, 20265820
Oct 16, 2026582-20
Oct 15, 2026602-182
Oct 14, 20267840
Oct 13, 20267840
Oct 09, 20267840
Oct 08, 20267840
Oct 07, 20267840
Oct 06, 2026784+3
Oct 05, 20267810
Oct 02, 2026781No prior observation