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Contract OI history

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Jan 15, 2027 EXPIRATION

HTFL $35.00 Put

HTFL270115P00035000

Latest saved OI948Oct 21, 2026
Last change+156vs previous saved observation
Saved market days6Oct 07, 2026 onwards
Daily open interest Hover a point for its date and OI
HTFL $35.00 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. 9484740 2026-10-07: 716 OI2026-10-09: 715 OI2026-10-13: 792 OI2026-10-14: 792 OI2026-10-16: 792 OI2026-10-21: 948 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, 2026Viewing948+156
Oct 16, 20267920
Oct 14, 20267920
Oct 13, 2026792+77
Oct 09, 2026715-1
Oct 07, 2026716No prior observation