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Contract OI history

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Dec 18, 2026 EXPIRATION

BX $85.00 Put

BX261218P00085000

Latest saved OI4,753Oct 23, 2026
Last change-3vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BX $85.00 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. 4,7562,3780 2026-10-02: 1,532 OI2026-10-05: 1,532 OI2026-10-06: 1,532 OI2026-10-07: 1,532 OI2026-10-08: 1,532 OI2026-10-09: 1,532 OI2026-10-13: 1,532 OI2026-10-14: 1,533 OI2026-10-15: 1,988 OI2026-10-16: 4,628 OI2026-10-21: 4,756 OI2026-10-23: 4,753 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

BX contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing4,753-3
Oct 21, 20264,756+128
Oct 16, 20264,628+2,640
Oct 15, 20261,988+455
Oct 14, 20261,533+1
Oct 13, 20261,5320
Oct 09, 20261,5320
Oct 08, 20261,5320
Oct 07, 20261,5320
Oct 06, 20261,5320
Oct 05, 20261,5320
Oct 02, 20261,532No prior observation