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Contract OI history

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Dec 18, 2026 EXPIRATION

HCA $500.00 Call

HCA261218C00500000

Latest saved OI117Oct 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 $500.00 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. 117580 2026-10-02: 103 OI2026-10-05: 103 OI2026-10-06: 107 OI2026-10-07: 107 OI2026-10-08: 109 OI2026-10-09: 110 OI2026-10-13: 110 OI2026-10-14: 110 OI2026-10-15: 110 OI2026-10-16: 112 OI2026-10-21: 117 OI2026-10-23: 117 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, 20261170
Oct 21, 2026Viewing117+5
Oct 16, 2026112+2
Oct 15, 20261100
Oct 14, 20261100
Oct 13, 20261100
Oct 09, 2026110+1
Oct 08, 2026109+2
Oct 07, 20261070
Oct 06, 2026107+4
Oct 05, 20261030
Oct 02, 2026103No prior observation