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Contract OI history

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Dec 18, 2026 EXPIRATION

HSTM $35.00 Call

HSTM261218C00035000

Latest saved OI5Oct 23, 2026
Last change0vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
HSTM $35.00 call open interest history 6 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 630 2026-10-09: 6 OI2026-10-13: 5 OI2026-10-14: 5 OI2026-10-16: 5 OI2026-10-20: 5 OI2026-10-23: 5 OI Oct 09, 2026Oct 23, 2026

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

HSTM contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 202650
Oct 20, 2026Viewing50
Oct 16, 202650
Oct 14, 202650
Oct 13, 20265-1
Oct 09, 20266No prior observation