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Contract OI history

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Nov 20, 2026 EXPIRATION

HEI $400.00 Call

HEI261120C00400000

Latest saved OI24Oct 20, 2026
Last change0vs previous saved observation
Saved market days10Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
HEI $400.00 call open interest history 10 saved observations from 2026-10-02 to 2026-10-20. Exact values and changes are listed in the table below. 24120 2026-10-02: 21 OI2026-10-05: 21 OI2026-10-06: 21 OI2026-10-07: 21 OI2026-10-08: 24 OI2026-10-09: 24 OI2026-10-13: 24 OI2026-10-14: 24 OI2026-10-16: 24 OI2026-10-20: 24 OI Oct 02, 2026Oct 20, 2026

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

HEI contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 20, 2026Viewing240
Oct 16, 2026240
Oct 14, 2026240
Oct 13, 2026240
Oct 09, 2026240
Oct 08, 202624+3
Oct 07, 2026210
Oct 06, 2026210
Oct 05, 2026210
Oct 02, 202621No prior observation