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Contract OI history

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Dec 18, 2026 EXPIRATION

BSP $38.00 Put

BSP261218P00038000

Latest saved OI696Oct 23, 2026
Last change+500vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
BSP $38.00 put open interest history 7 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 2,2131,1060 2026-10-08: 2,202 OI2026-10-13: 2,203 OI2026-10-14: 2,213 OI2026-10-15: 206 OI2026-10-16: 196 OI2026-10-21: 196 OI2026-10-23: 696 OI Oct 08, 2026Oct 23, 2026

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

BSP contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing696+500
Oct 21, 20261960
Oct 16, 2026196-10
Oct 15, 2026206-2,007
Oct 14, 20262,213+10
Oct 13, 20262,203+1
Oct 08, 20262,202No prior observation