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Contract OI history

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Nov 20, 2026 EXPIRATION

M $21.00 Put

M261120P00021000

Latest saved OI1,759Oct 23, 2026
Last change-1,091vs 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. 2,8501,4250 2026-10-02: 1,159 OI2026-10-05: 1,244 OI2026-10-06: 1,312 OI2026-10-07: 1,334 OI2026-10-08: 1,334 OI2026-10-09: 1,348 OI2026-10-13: 1,348 OI2026-10-14: 1,348 OI2026-10-15: 2,802 OI2026-10-16: 2,796 OI2026-10-21: 2,850 OI2026-10-23: 1,759 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, 2026Viewing1,759-1,091
Oct 21, 20262,850+54
Oct 16, 20262,796-6
Oct 15, 20262,802+1,454
Oct 14, 20261,3480
Oct 13, 20261,3480
Oct 09, 20261,348+14
Oct 08, 20261,3340
Oct 07, 20261,334+22
Oct 06, 20261,312+68
Oct 05, 20261,244+85
Oct 02, 20261,159No prior observation