OITracker Cboe delayed data

Contract OI history

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May 21, 2027 EXPIRATION

U $35.00 Put

U270521P00035000

Latest saved OI141Oct 23, 2026
Last change0vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
U $35.00 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. 144720 2026-10-02: 144 OI2026-10-05: 144 OI2026-10-06: 144 OI2026-10-07: 144 OI2026-10-08: 144 OI2026-10-09: 143 OI2026-10-14: 142 OI2026-10-15: 142 OI2026-10-16: 143 OI2026-10-21: 141 OI2026-10-23: 141 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, 2026Viewing1410
Oct 21, 2026141-2
Oct 16, 2026143+1
Oct 15, 20261420
Oct 14, 2026142-1
Oct 09, 2026143-1
Oct 08, 20261440
Oct 07, 20261440
Oct 06, 20261440
Oct 05, 20261440
Oct 02, 2026144No prior observation