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Contract OI history

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Mar 19, 2027 EXPIRATION

BLK $1220.00 Call

BLK270319C01220000

Latest saved OI467Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BLK $1220.00 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. 4672330 2026-10-02: 457 OI2026-10-05: 457 OI2026-10-06: 457 OI2026-10-07: 457 OI2026-10-08: 457 OI2026-10-09: 457 OI2026-10-13: 457 OI2026-10-14: 457 OI2026-10-15: 457 OI2026-10-16: 457 OI2026-10-21: 467 OI2026-10-23: 467 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, 2026Viewing4670
Oct 21, 2026467+10
Oct 16, 20264570
Oct 15, 20264570
Oct 14, 20264570
Oct 13, 20264570
Oct 09, 20264570
Oct 08, 20264570
Oct 07, 20264570
Oct 06, 20264570
Oct 05, 20264570
Oct 02, 2026457No prior observation