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Contract OI history

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Nov 20, 2026 EXPIRATION

HCA $390.00 Put

HCA261120P00390000

Latest saved OI1,160Oct 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 $390.00 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. 1,1605800 2026-10-02: 1,157 OI2026-10-05: 1,157 OI2026-10-06: 1,158 OI2026-10-07: 1,160 OI2026-10-08: 1,160 OI2026-10-09: 1,160 OI2026-10-13: 1,158 OI2026-10-14: 1,160 OI2026-10-15: 1,160 OI2026-10-16: 1,158 OI2026-10-21: 1,160 OI2026-10-23: 1,160 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, 2026Viewing1,1600
Oct 21, 20261,160+2
Oct 16, 20261,158-2
Oct 15, 20261,1600
Oct 14, 20261,160+2
Oct 13, 20261,158-2
Oct 09, 20261,1600
Oct 08, 20261,1600
Oct 07, 20261,160+2
Oct 06, 20261,158+1
Oct 05, 20261,1570
Oct 02, 20261,157No prior observation