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Contract OI history

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Nov 20, 2026 EXPIRATION

HEI $300.00 Put

HEI261120P00300000

Latest saved OI68Oct 20, 2026
Last change+8vs previous saved observation
Saved market days10Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
HEI $300.00 put open interest history 10 saved observations from 2026-10-02 to 2026-10-20. Exact values and changes are listed in the table below. 68340 2026-10-02: 46 OI2026-10-05: 46 OI2026-10-06: 46 OI2026-10-07: 46 OI2026-10-08: 43 OI2026-10-09: 43 OI2026-10-13: 43 OI2026-10-14: 43 OI2026-10-16: 60 OI2026-10-20: 68 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, 2026Viewing68+8
Oct 16, 202660+17
Oct 14, 2026430
Oct 13, 2026430
Oct 09, 2026430
Oct 08, 202643-3
Oct 07, 2026460
Oct 06, 2026460
Oct 05, 2026460
Oct 02, 202646No prior observation