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Contract OI history

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Apr 16, 2027 EXPIRATION

HBM $20.00 Put

HBM270416P00020000

Latest saved OI79Oct 20, 2026
Last change0vs previous saved observation
Saved market days10Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
HBM $20.00 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. 79390 2026-10-02: 36 OI2026-10-05: 36 OI2026-10-06: 39 OI2026-10-07: 43 OI2026-10-08: 47 OI2026-10-09: 49 OI2026-10-13: 49 OI2026-10-14: 49 OI2026-10-16: 79 OI2026-10-20: 79 OI Oct 02, 2026Oct 20, 2026

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

HBM contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 20, 2026Viewing790
Oct 16, 202679+30
Oct 14, 2026490
Oct 13, 2026490
Oct 09, 202649+2
Oct 08, 202647+4
Oct 07, 202643+4
Oct 06, 202639+3
Oct 05, 2026360
Oct 02, 202636No prior observation