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Contract OI history

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Jan 15, 2027 EXPIRATION

CAH $220.00 Put

CAH270115P00220000

Latest saved OI774Oct 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 $220.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 7743870 2026-10-02: 559 OI2026-10-05: 559 OI2026-10-06: 559 OI2026-10-07: 559 OI2026-10-08: 559 OI2026-10-09: 559 OI2026-10-13: 560 OI2026-10-14: 560 OI2026-10-15: 560 OI2026-10-16: 560 OI2026-10-21: 773 OI2026-10-23: 774 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, 2026Viewing774+1
Oct 21, 2026773+213
Oct 16, 20265600
Oct 15, 20265600
Oct 14, 20265600
Oct 13, 2026560+1
Oct 09, 20265590
Oct 08, 20265590
Oct 07, 20265590
Oct 06, 20265590
Oct 05, 20265590
Oct 02, 2026559No prior observation