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Contract OI history

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Dec 18, 2026 EXPIRATION

CAH $270.00 Call

CAH261218C00270000

Latest saved OI376Oct 23, 2026
Last change-1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CAH $270.00 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. 3851920 2026-10-02: 373 OI2026-10-05: 373 OI2026-10-06: 374 OI2026-10-07: 374 OI2026-10-08: 375 OI2026-10-09: 375 OI2026-10-13: 375 OI2026-10-14: 385 OI2026-10-15: 385 OI2026-10-16: 383 OI2026-10-21: 377 OI2026-10-23: 376 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, 2026Viewing376-1
Oct 21, 2026377-6
Oct 16, 2026383-2
Oct 15, 20263850
Oct 14, 2026385+10
Oct 13, 20263750
Oct 09, 20263750
Oct 08, 2026375+1
Oct 07, 20263740
Oct 06, 2026374+1
Oct 05, 20263730
Oct 02, 2026373No prior observation