OITracker Cboe delayed data

Contract OI history

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Oct 30, 2026 EXPIRATION

B $51.00 Call

B261030C00051000

Latest saved OI437Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $51.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 4372180 2026-10-02: 3 OI2026-10-05: 3 OI2026-10-06: 3 OI2026-10-07: 3 OI2026-10-08: 3 OI2026-10-09: 3 OI2026-10-13: 3 OI2026-10-14: 437 OI2026-10-15: 437 OI2026-10-16: 437 OI2026-10-21: 437 OI2026-10-23: 437 OI Oct 02, 2026Oct 23, 2026

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

B contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing4370
Oct 21, 20264370
Oct 16, 20264370
Oct 15, 20264370
Oct 14, 2026437+434
Oct 13, 202630
Oct 09, 202630
Oct 08, 202630
Oct 07, 202630
Oct 06, 202630
Oct 05, 202630
Oct 02, 20263No prior observation