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Contract OI history

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Jan 21, 2028 EXPIRATION

HLF $27.50 Put

HLF280121P00027500

Latest saved OI232Oct 20, 2026
Last change0vs previous saved observation
Saved market days9Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
HLF $27.50 put open interest history 9 saved observations from 2026-10-02 to 2026-10-20. Exact values and changes are listed in the table below. 2321160 2026-10-02: 232 OI2026-10-05: 232 OI2026-10-06: 232 OI2026-10-07: 232 OI2026-10-09: 232 OI2026-10-13: 232 OI2026-10-14: 232 OI2026-10-16: 232 OI2026-10-20: 232 OI Oct 02, 2026Oct 20, 2026

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

HLF contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 20, 2026Viewing2320
Oct 16, 20262320
Oct 14, 20262320
Oct 13, 20262320
Oct 09, 20262320
Oct 07, 20262320
Oct 06, 20262320
Oct 05, 20262320
Oct 02, 2026232No prior observation