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Contract OI history

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Mar 19, 2027 EXPIRATION

BSX $35.00 Call

BSX270319C00035000

Latest saved OI1,957Oct 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 $35.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 1,9579780 2026-10-02: 1,951 OI2026-10-05: 1,951 OI2026-10-06: 1,951 OI2026-10-07: 1,951 OI2026-10-08: 1,951 OI2026-10-09: 1,952 OI2026-10-13: 1,952 OI2026-10-14: 1,952 OI2026-10-15: 1,954 OI2026-10-16: 1,957 OI2026-10-21: 1,957 OI2026-10-23: 1,957 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, 2026Viewing1,9570
Oct 21, 20261,9570
Oct 16, 20261,957+3
Oct 15, 20261,954+2
Oct 14, 20261,9520
Oct 13, 20261,9520
Oct 09, 20261,952+1
Oct 08, 20261,9510
Oct 07, 20261,9510
Oct 06, 20261,9510
Oct 05, 20261,9510
Oct 02, 20261,951No prior observation