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Contract OI history

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Jun 17, 2027 EXPIRATION

BLK $1140.00 Put

BLK270617P01140000

Latest saved OI39Oct 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 $1140.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 40200 2026-10-02: 20 OI2026-10-05: 30 OI2026-10-06: 30 OI2026-10-07: 30 OI2026-10-08: 30 OI2026-10-09: 30 OI2026-10-13: 30 OI2026-10-14: 30 OI2026-10-15: 40 OI2026-10-16: 40 OI2026-10-21: 39 OI2026-10-23: 39 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, 2026Viewing390
Oct 21, 202639-1
Oct 16, 2026400
Oct 15, 202640+10
Oct 14, 2026300
Oct 13, 2026300
Oct 09, 2026300
Oct 08, 2026300
Oct 07, 2026300
Oct 06, 2026300
Oct 05, 202630+10
Oct 02, 202620No prior observation