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Contract OI history

Back to BLK

Jan 15, 2027 EXPIRATION

BLK $390.00 Put

BLK270115P00390000

Latest saved OI764Oct 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 $390.00 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. 7643820 2026-10-02: 762 OI2026-10-05: 762 OI2026-10-06: 762 OI2026-10-07: 762 OI2026-10-08: 762 OI2026-10-09: 762 OI2026-10-13: 762 OI2026-10-14: 762 OI2026-10-15: 762 OI2026-10-16: 764 OI2026-10-21: 764 OI2026-10-23: 764 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, 2026Viewing7640
Oct 21, 20267640
Oct 16, 2026764+2
Oct 15, 20267620
Oct 14, 20267620
Oct 13, 20267620
Oct 09, 20267620
Oct 08, 20267620
Oct 07, 20267620
Oct 06, 20267620
Oct 05, 20267620
Oct 02, 2026762No prior observation