OITracker Cboe delayed data

Contract OI history

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Nov 20, 2026 EXPIRATION

EDIT $2.50 Put

EDIT261120P00002500

Latest saved OI458Oct 23, 2026
Last change+17vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
EDIT $2.50 put open interest history 7 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 4582290 2026-10-08: 354 OI2026-10-09: 369 OI2026-10-13: 374 OI2026-10-14: 436 OI2026-10-16: 436 OI2026-10-20: 441 OI2026-10-23: 458 OI Oct 08, 2026Oct 23, 2026

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

EDIT contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing458+17
Oct 20, 2026441+5
Oct 16, 20264360
Oct 14, 2026436+62
Oct 13, 2026374+5
Oct 09, 2026369+15
Oct 08, 2026354No prior observation