OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

BSX $45.00 Call

BSX280121C00045000

Latest saved OI2,443Oct 23, 2026
Last change-34vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BSX $45.00 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. 2,4951,2470 2026-10-02: 2,389 OI2026-10-05: 2,406 OI2026-10-06: 2,431 OI2026-10-07: 2,455 OI2026-10-08: 2,455 OI2026-10-09: 2,468 OI2026-10-13: 2,482 OI2026-10-14: 2,482 OI2026-10-15: 2,465 OI2026-10-16: 2,495 OI2026-10-21: 2,477 OI2026-10-23: 2,443 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, 2026Viewing2,443-34
Oct 21, 20262,477-18
Oct 16, 20262,495+30
Oct 15, 20262,465-17
Oct 14, 20262,4820
Oct 13, 20262,482+14
Oct 09, 20262,468+13
Oct 08, 20262,4550
Oct 07, 20262,455+24
Oct 06, 20262,431+25
Oct 05, 20262,406+17
Oct 02, 20262,389No prior observation