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Contract OI history

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Dec 18, 2026 EXPIRATION

BLK $1140.00 Call

BLK261218C01140000

Latest saved OI190Oct 23, 2026
Last change+25vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BLK $1140.00 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. 190950 2026-10-02: 91 OI2026-10-05: 120 OI2026-10-06: 120 OI2026-10-07: 120 OI2026-10-08: 123 OI2026-10-09: 123 OI2026-10-13: 128 OI2026-10-14: 128 OI2026-10-15: 166 OI2026-10-16: 168 OI2026-10-21: 165 OI2026-10-23: 190 OI Oct 02, 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, 2026Viewing190+25
Oct 21, 2026165-3
Oct 16, 2026168+2
Oct 15, 2026166+38
Oct 14, 20261280
Oct 13, 2026128+5
Oct 09, 20261230
Oct 08, 2026123+3
Oct 07, 20261200
Oct 06, 20261200
Oct 05, 2026120+29
Oct 02, 202691No prior observation