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Contract OI history

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Jan 15, 2027 EXPIRATION

BLK $900.00 Put

BLK270115P00900000

Latest saved OI145Oct 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 $900.00 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. 145720 2026-10-02: 93 OI2026-10-05: 93 OI2026-10-06: 93 OI2026-10-07: 143 OI2026-10-08: 143 OI2026-10-09: 143 OI2026-10-13: 143 OI2026-10-14: 143 OI2026-10-15: 143 OI2026-10-16: 145 OI2026-10-21: 145 OI2026-10-23: 145 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, 2026Viewing1450
Oct 21, 20261450
Oct 16, 2026145+2
Oct 15, 20261430
Oct 14, 20261430
Oct 13, 20261430
Oct 09, 20261430
Oct 08, 20261430
Oct 07, 2026143+50
Oct 06, 2026930
Oct 05, 2026930
Oct 02, 202693No prior observation