OITracker Cboe delayed data

Contract OI history

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Nov 13, 2026 EXPIRATION

M $21.50 Put

M261113P00021500

Latest saved OI38Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
M $21.50 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. 38190 2026-10-02: 0 OI2026-10-05: 0 OI2026-10-06: 1 OI2026-10-07: 3 OI2026-10-08: 3 OI2026-10-09: 3 OI2026-10-13: 24 OI2026-10-14: 24 OI2026-10-15: 30 OI2026-10-16: 29 OI2026-10-21: 38 OI2026-10-23: 38 OI Oct 02, 2026Oct 23, 2026

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

M contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing380
Oct 21, 202638+9
Oct 16, 202629-1
Oct 15, 202630+6
Oct 14, 2026240
Oct 13, 202624+21
Oct 09, 202630
Oct 08, 202630
Oct 07, 20263+2
Oct 06, 20261+1
Oct 05, 202600
Oct 02, 20260No prior observation