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Contract OI history

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Nov 20, 2026 EXPIRATION

HTFL $40.00 Put

HTFL261120P00040000

Latest saved OI112Oct 21, 2026
Last change+95vs previous saved observation
Saved market days6Oct 07, 2026 onwards
Daily open interest Hover a point for its date and OI
HTFL $40.00 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. 112560 2026-10-07: 12 OI2026-10-09: 15 OI2026-10-13: 12 OI2026-10-14: 12 OI2026-10-16: 17 OI2026-10-21: 112 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, 2026Viewing112+95
Oct 16, 202617+5
Oct 14, 2026120
Oct 13, 202612-3
Oct 09, 202615+3
Oct 07, 202612No prior observation