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Contract OI history

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Dec 18, 2026 EXPIRATION

OSUR $2.50 Put

OSUR261218P00002500

Latest saved OI1Oct 23, 2026
Last change0vs previous saved observation
Saved market days3Oct 16, 2026 onwards
Daily open interest Hover a point for its date and OI
OSUR $2.50 put open interest history 3 saved observations from 2026-10-16 to 2026-10-23. Exact values and changes are listed in the table below. 10 2026-10-16: 1 OI2026-10-20: 1 OI2026-10-23: 1 OI Oct 16, 2026Oct 23, 2026

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

OSUR contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing10
Oct 20, 202610
Oct 16, 20261No prior observation