OITracker Cboe delayed data

Contract OI history

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May 21, 2027 EXPIRATION

U $35.00 Call

U270521C00035000

Latest saved OI496Oct 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 call open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 4962480 2026-10-02: 473 OI2026-10-05: 472 OI2026-10-06: 471 OI2026-10-07: 471 OI2026-10-08: 471 OI2026-10-09: 473 OI2026-10-14: 476 OI2026-10-15: 482 OI2026-10-16: 482 OI2026-10-21: 496 OI2026-10-23: 496 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, 20264960
Oct 21, 2026Viewing496+14
Oct 16, 20264820
Oct 15, 2026482+6
Oct 14, 2026476+3
Oct 09, 2026473+2
Oct 08, 20264710
Oct 07, 20264710
Oct 06, 2026471-1
Oct 05, 2026472-1
Oct 02, 2026473No prior observation