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Contract OI history

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Jan 21, 2028 EXPIRATION

BSX $55.00 Call

BSX280121C00055000

Latest saved OI1,519Oct 23, 2026
Last change-304vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BSX $55.00 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. 1,8249120 2026-10-02: 1,798 OI2026-10-05: 1,804 OI2026-10-06: 1,813 OI2026-10-07: 1,816 OI2026-10-08: 1,816 OI2026-10-09: 1,818 OI2026-10-13: 1,824 OI2026-10-14: 1,824 OI2026-10-15: 1,824 OI2026-10-16: 1,823 OI2026-10-21: 1,823 OI2026-10-23: 1,519 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, 2026Viewing1,519-304
Oct 21, 20261,8230
Oct 16, 20261,823-1
Oct 15, 20261,8240
Oct 14, 20261,8240
Oct 13, 20261,824+6
Oct 09, 20261,818+2
Oct 08, 20261,8160
Oct 07, 20261,816+3
Oct 06, 20261,813+9
Oct 05, 20261,804+6
Oct 02, 20261,798No prior observation