OITracker Cboe delayed data

Contract OI history

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May 21, 2027 EXPIRATION

OPEN $2.00 Put

OPEN270521P00002000

Latest saved OI885Oct 23, 2026
Last change+438vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
OPEN $2.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 8854420 2026-10-09: 408 OI2026-10-13: 417 OI2026-10-14: 417 OI2026-10-15: 418 OI2026-10-16: 438 OI2026-10-21: 447 OI2026-10-23: 885 OI Oct 09, 2026Oct 23, 2026

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

OPEN contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing885+438
Oct 21, 2026447+9
Oct 16, 2026438+20
Oct 15, 2026418+1
Oct 14, 20264170
Oct 13, 2026417+9
Oct 09, 2026408No prior observation