OITracker Cboe delayed data

Contract OI history

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Oct 30, 2026 EXPIRATION

B $41.00 Call

B261030C00041000

Latest saved OI361Oct 23, 2026
Last change+86vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $41.00 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. 3611800 2026-10-02: 137 OI2026-10-05: 152 OI2026-10-06: 152 OI2026-10-07: 152 OI2026-10-08: 172 OI2026-10-09: 172 OI2026-10-13: 180 OI2026-10-14: 180 OI2026-10-15: 183 OI2026-10-16: 209 OI2026-10-21: 275 OI2026-10-23: 361 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, 2026Viewing361+86
Oct 21, 2026275+66
Oct 16, 2026209+26
Oct 15, 2026183+3
Oct 14, 20261800
Oct 13, 2026180+8
Oct 09, 20261720
Oct 08, 2026172+20
Oct 07, 20261520
Oct 06, 20261520
Oct 05, 2026152+15
Oct 02, 2026137No prior observation