OITracker Cboe delayed data

Contract OI history

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Nov 20, 2026 EXPIRATION

B $37.00 Call

B261120C00037000

Latest saved OI125Oct 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 $37.00 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. 135670 2026-10-02: 9 OI2026-10-05: 12 OI2026-10-06: 12 OI2026-10-07: 12 OI2026-10-08: 12 OI2026-10-09: 135 OI2026-10-13: 125 OI2026-10-14: 125 OI2026-10-15: 125 OI2026-10-16: 125 OI2026-10-21: 125 OI2026-10-23: 125 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, 2026Viewing1250
Oct 21, 20261250
Oct 16, 20261250
Oct 15, 20261250
Oct 14, 20261250
Oct 13, 2026125-10
Oct 09, 2026135+123
Oct 08, 2026120
Oct 07, 2026120
Oct 06, 2026120
Oct 05, 202612+3
Oct 02, 20269No prior observation