OITracker Cboe delayed data

Contract OI history

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Oct 30, 2026 EXPIRATION

B $41.50 Call

B261030C00041500

Latest saved OI84Oct 23, 2026
Last change+28vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
B $41.50 call open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 84420 2026-10-09: 0 OI2026-10-13: 1 OI2026-10-14: 2 OI2026-10-15: 12 OI2026-10-16: 12 OI2026-10-21: 56 OI2026-10-23: 84 OI Oct 09, 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, 2026Viewing84+28
Oct 21, 202656+44
Oct 16, 2026120
Oct 15, 202612+10
Oct 14, 20262+1
Oct 13, 20261+1
Oct 09, 20260No prior observation