OITracker Cboe delayed data

Contract OI history

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Nov 13, 2026 EXPIRATION

M $21.00 Put

M261113P00021000

Latest saved OI55Oct 23, 2026
Last change+15vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
M $21.00 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. 55270 2026-10-02: 8 OI2026-10-05: 33 OI2026-10-06: 33 OI2026-10-07: 33 OI2026-10-08: 33 OI2026-10-09: 47 OI2026-10-13: 47 OI2026-10-14: 47 OI2026-10-15: 47 OI2026-10-16: 46 OI2026-10-21: 40 OI2026-10-23: 55 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, 2026Viewing55+15
Oct 21, 202640-6
Oct 16, 202646-1
Oct 15, 2026470
Oct 14, 2026470
Oct 13, 2026470
Oct 09, 202647+14
Oct 08, 2026330
Oct 07, 2026330
Oct 06, 2026330
Oct 05, 202633+25
Oct 02, 20268No prior observation