OITracker Cboe delayed data

Contract OI history

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Oct 30, 2026 EXPIRATION

U $40.00 Put

U261030P00040000

Latest saved OI1,593Oct 23, 2026
Last change+30vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
U $40.00 put open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 1,5937960 2026-10-02: 185 OI2026-10-05: 196 OI2026-10-06: 198 OI2026-10-07: 198 OI2026-10-08: 198 OI2026-10-09: 181 OI2026-10-14: 191 OI2026-10-15: 1,274 OI2026-10-16: 1,326 OI2026-10-21: 1,563 OI2026-10-23: 1,593 OI Oct 02, 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, 20261,593+30
Oct 21, 2026Viewing1,563+237
Oct 16, 20261,326+52
Oct 15, 20261,274+1,083
Oct 14, 2026191+10
Oct 09, 2026181-17
Oct 08, 20261980
Oct 07, 20261980
Oct 06, 2026198+2
Oct 05, 2026196+11
Oct 02, 2026185No prior observation