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Contract OI history

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Nov 20, 2026 EXPIRATION

BKSY $35.00 Put

BKSY261120P00035000

Latest saved OI4Oct 23, 2026
Last change-42vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BKSY $35.00 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. 4072030 2026-10-02: 392 OI2026-10-05: 391 OI2026-10-06: 407 OI2026-10-07: 407 OI2026-10-08: 407 OI2026-10-09: 369 OI2026-10-13: 369 OI2026-10-14: 369 OI2026-10-15: 355 OI2026-10-16: 354 OI2026-10-21: 46 OI2026-10-23: 4 OI Oct 02, 2026Oct 23, 2026

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

BKSY contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing4-42
Oct 21, 202646-308
Oct 16, 2026354-1
Oct 15, 2026355-14
Oct 14, 20263690
Oct 13, 20263690
Oct 09, 2026369-38
Oct 08, 20264070
Oct 07, 20264070
Oct 06, 2026407+16
Oct 05, 2026391-1
Oct 02, 2026392No prior observation