OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

BKSY $40.00 Call

BKSY270115C00040000

Latest saved OI6,698Oct 23, 2026
Last change-1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BKSY $40.00 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. 6,7313,3650 2026-10-02: 6,731 OI2026-10-05: 6,729 OI2026-10-06: 6,729 OI2026-10-07: 6,729 OI2026-10-08: 6,729 OI2026-10-09: 6,725 OI2026-10-13: 6,724 OI2026-10-14: 6,724 OI2026-10-15: 6,724 OI2026-10-16: 6,702 OI2026-10-21: 6,699 OI2026-10-23: 6,698 OI Oct 02, 2026Oct 23, 2026

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

BKSY contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing6,698-1
Oct 21, 20266,699-3
Oct 16, 20266,702-22
Oct 15, 20266,7240
Oct 14, 20266,7240
Oct 13, 20266,724-1
Oct 09, 20266,725-4
Oct 08, 20266,7290
Oct 07, 20266,7290
Oct 06, 20266,7290
Oct 05, 20266,729-2
Oct 02, 20266,731No prior observation