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Contract OI history

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Nov 20, 2026 EXPIRATION

HCA $425.00 Put

HCA261120P00425000

Latest saved OI418Oct 23, 2026
Last change+5vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
HCA $425.00 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. 6573280 2026-10-02: 654 OI2026-10-05: 654 OI2026-10-06: 654 OI2026-10-07: 654 OI2026-10-08: 654 OI2026-10-09: 655 OI2026-10-13: 655 OI2026-10-14: 657 OI2026-10-15: 657 OI2026-10-16: 373 OI2026-10-21: 413 OI2026-10-23: 418 OI Oct 02, 2026Oct 23, 2026

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

HCA contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing418+5
Oct 21, 2026413+40
Oct 16, 2026373-284
Oct 15, 20266570
Oct 14, 2026657+2
Oct 13, 20266550
Oct 09, 2026655+1
Oct 08, 20266540
Oct 07, 20266540
Oct 06, 20266540
Oct 05, 20266540
Oct 02, 2026654No prior observation