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Contract OI history

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May 21, 2027 EXPIRATION

BSX $30.00 Put

BSX270521P00030000

Latest saved OI322Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BSX $30.00 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. 3221610 2026-10-02: 20 OI2026-10-05: 20 OI2026-10-06: 217 OI2026-10-07: 217 OI2026-10-08: 217 OI2026-10-09: 217 OI2026-10-13: 217 OI2026-10-14: 217 OI2026-10-15: 217 OI2026-10-16: 217 OI2026-10-21: 322 OI2026-10-23: 322 OI Oct 02, 2026Oct 23, 2026

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

BSX contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing3220
Oct 21, 2026322+105
Oct 16, 20262170
Oct 15, 20262170
Oct 14, 20262170
Oct 13, 20262170
Oct 09, 20262170
Oct 08, 20262170
Oct 07, 20262170
Oct 06, 2026217+197
Oct 05, 2026200
Oct 02, 202620No prior observation