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Contract OI history

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Jan 15, 2027 EXPIRATION

CAH $280.00 Call

CAH270115C00280000

Latest saved OI289Oct 23, 2026
Last change-35vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CAH $280.00 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. 3241620 2026-10-02: 302 OI2026-10-05: 302 OI2026-10-06: 302 OI2026-10-07: 302 OI2026-10-08: 302 OI2026-10-09: 321 OI2026-10-13: 321 OI2026-10-14: 321 OI2026-10-15: 319 OI2026-10-16: 324 OI2026-10-21: 324 OI2026-10-23: 289 OI Oct 02, 2026Oct 23, 2026

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

CAH contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing289-35
Oct 21, 20263240
Oct 16, 2026324+5
Oct 15, 2026319-2
Oct 14, 20263210
Oct 13, 20263210
Oct 09, 2026321+19
Oct 08, 20263020
Oct 07, 20263020
Oct 06, 20263020
Oct 05, 20263020
Oct 02, 2026302No prior observation