OITracker Cboe delayed data

Contract OI history

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Nov 06, 2026 EXPIRATION

M $21.00 Put

M261106P00021000

Latest saved OI32Oct 23, 2026
Last change+1vs 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. 32160 2026-10-02: 2 OI2026-10-05: 4 OI2026-10-06: 7 OI2026-10-07: 7 OI2026-10-08: 7 OI2026-10-09: 9 OI2026-10-13: 11 OI2026-10-14: 11 OI2026-10-15: 16 OI2026-10-16: 32 OI2026-10-21: 31 OI2026-10-23: 32 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, 2026Viewing32+1
Oct 21, 202631-1
Oct 16, 202632+16
Oct 15, 202616+5
Oct 14, 2026110
Oct 13, 202611+2
Oct 09, 20269+2
Oct 08, 202670
Oct 07, 202670
Oct 06, 20267+3
Oct 05, 20264+2
Oct 02, 20262No prior observation