OITracker Cboe delayed data

Contract OI history

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Oct 23, 2026 EXPIRATION

U $40.50 Put

U261023P00040500

Latest saved OI106Oct 23, 2026
Last change+3vs previous saved observation
Saved market days10Oct 05, 2026 onwards
Daily open interest Hover a point for its date and OI
U $40.50 put open interest history 10 saved observations from 2026-10-05 to 2026-10-23. Exact values and changes are listed in the table below. 106530 2026-10-05: 0 OI2026-10-06: 1 OI2026-10-07: 2 OI2026-10-08: 2 OI2026-10-09: 2 OI2026-10-14: 2 OI2026-10-15: 6 OI2026-10-16: 6 OI2026-10-21: 103 OI2026-10-23: 106 OI Oct 05, 2026Oct 23, 2026

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

U contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026106+3
Oct 21, 2026Viewing103+97
Oct 16, 202660
Oct 15, 20266+4
Oct 14, 202620
Oct 09, 202620
Oct 08, 202620
Oct 07, 20262+1
Oct 06, 20261+1
Oct 05, 20260No prior observation