OITracker Cboe delayed data

Contract OI history

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Nov 27, 2026 EXPIRATION

M $20.00 Put

M261127P00020000

Latest saved OI4Oct 23, 2026
Last change-1vs previous saved observation
Saved market days9Oct 07, 2026 onwards
Daily open interest Hover a point for its date and OI
M $20.00 put open interest history 9 saved observations from 2026-10-07 to 2026-10-23. Exact values and changes are listed in the table below. 520 2026-10-07: 0 OI2026-10-08: 0 OI2026-10-09: 0 OI2026-10-13: 1 OI2026-10-14: 1 OI2026-10-15: 4 OI2026-10-16: 4 OI2026-10-21: 5 OI2026-10-23: 4 OI Oct 07, 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, 2026Viewing4-1
Oct 21, 20265+1
Oct 16, 202640
Oct 15, 20264+3
Oct 14, 202610
Oct 13, 20261+1
Oct 09, 202600
Oct 08, 202600
Oct 07, 20260No prior observation