OITracker Cboe delayed data

Contract OI history

Back to BLK

Oct 23, 2026 EXPIRATION

BLK $1175.00 Call

BLK261023C01175000

Latest saved OI27Oct 23, 2026
Last change+15vs previous saved observation
Saved market days2Oct 21, 2026 onwards
Daily open interest Hover a point for its date and OI
BLK $1175.00 call open interest history 2 saved observations from 2026-10-21 to 2026-10-23. Exact values and changes are listed in the table below. 27130 2026-10-21: 12 OI2026-10-23: 27 OI Oct 21, 2026Oct 23, 2026

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

BLK contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing27+15
Oct 21, 202612No prior observation