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Contract OI history

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Jan 21, 2028 EXPIRATION

BSY $40.00 Call

BSY280121C00040000

Latest saved OI750Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
BSY $40.00 call open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 7503750 2026-10-09: 550 OI2026-10-13: 750 OI2026-10-14: 750 OI2026-10-15: 750 OI2026-10-16: 750 OI2026-10-21: 750 OI2026-10-23: 750 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, 2026Viewing7500
Oct 21, 20267500
Oct 16, 20267500
Oct 15, 20267500
Oct 14, 20267500
Oct 13, 2026750+200
Oct 09, 2026550No prior observation