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Contract OI history

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Dec 18, 2026 EXPIRATION

HEI $350.00 Call

HEI261218C00350000

Latest saved OI64Oct 20, 2026
Last change+1vs previous saved observation
Saved market days2Oct 16, 2026 onwards
Daily open interest Hover a point for its date and OI
HEI $350.00 call open interest history 2 saved observations from 2026-10-16 to 2026-10-20. Exact values and changes are listed in the table below. 64320 2026-10-16: 63 OI2026-10-20: 64 OI Oct 16, 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, 2026Viewing64+1
Oct 16, 202663No prior observation