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Contract OI history

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Mar 19, 2027 EXPIRATION

HTFL $50.00 Put

HTFL270319P00050000

Latest saved OI4Oct 21, 2026
Last change+1vs previous saved observation
Saved market days6Oct 07, 2026 onwards
Daily open interest Hover a point for its date and OI
HTFL $50.00 put open interest history 6 saved observations from 2026-10-07 to 2026-10-21. Exact values and changes are listed in the table below. 420 2026-10-07: 3 OI2026-10-09: 3 OI2026-10-13: 3 OI2026-10-14: 3 OI2026-10-16: 3 OI2026-10-21: 4 OI Oct 07, 2026Oct 21, 2026

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

HTFL contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 21, 2026Viewing4+1
Oct 16, 202630
Oct 14, 202630
Oct 13, 202630
Oct 09, 202630
Oct 07, 20263No prior observation