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Contract OI history

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Nov 20, 2026 EXPIRATION

HCA $440.00 Put

HCA261120P00440000

Latest saved OI2,101Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
HCA $440.00 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. 2,1011,0500 2026-10-02: 11 OI2026-10-05: 11 OI2026-10-06: 12 OI2026-10-07: 12 OI2026-10-08: 12 OI2026-10-09: 12 OI2026-10-13: 14 OI2026-10-14: 15 OI2026-10-15: 1,980 OI2026-10-16: 1,987 OI2026-10-21: 2,101 OI2026-10-23: 2,101 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, 2026Viewing2,1010
Oct 21, 20262,101+114
Oct 16, 20261,987+7
Oct 15, 20261,980+1,965
Oct 14, 202615+1
Oct 13, 202614+2
Oct 09, 2026120
Oct 08, 2026120
Oct 07, 2026120
Oct 06, 202612+1
Oct 05, 2026110
Oct 02, 202611No prior observation