OITracker Cboe delayed data

Contract OI history

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Oct 30, 2026 EXPIRATION

U $40.50 Put

U261030P00040500

Latest saved OI151Oct 23, 2026
Last change+21vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
U $40.50 put open interest history 6 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 151750 2026-10-09: 0 OI2026-10-14: 0 OI2026-10-15: 44 OI2026-10-16: 56 OI2026-10-21: 130 OI2026-10-23: 151 OI Oct 09, 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, 2026151+21
Oct 21, 2026Viewing130+74
Oct 16, 202656+12
Oct 15, 202644+44
Oct 14, 202600
Oct 09, 20260No prior observation