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Contract OI history

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Nov 20, 2026 EXPIRATION

BSP $37.00 Put

BSP261120P00037000

Latest saved OI218Oct 23, 2026
Last change+1vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
BSP $37.00 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. 2181090 2026-10-08: 5 OI2026-10-13: 25 OI2026-10-14: 25 OI2026-10-15: 29 OI2026-10-16: 209 OI2026-10-21: 217 OI2026-10-23: 218 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, 2026Viewing218+1
Oct 21, 2026217+8
Oct 16, 2026209+180
Oct 15, 202629+4
Oct 14, 2026250
Oct 13, 202625+20
Oct 08, 20265No prior observation