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Contract OI history

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Nov 20, 2026 EXPIRATION

BSY $35.00 Put

BSY261120P00035000

Latest saved OI504Oct 23, 2026
Last change+6vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
BSY $35.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 5042520 2026-10-09: 494 OI2026-10-13: 494 OI2026-10-14: 494 OI2026-10-15: 494 OI2026-10-16: 494 OI2026-10-21: 498 OI2026-10-23: 504 OI Oct 09, 2026Oct 23, 2026

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

BSY contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing504+6
Oct 21, 2026498+4
Oct 16, 20264940
Oct 15, 20264940
Oct 14, 20264940
Oct 13, 20264940
Oct 09, 2026494No prior observation