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Contract OI history

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Jan 15, 2027 EXPIRATION

OUST $25.00 Put

OUST270115P00025000

Latest saved OI393Oct 23, 2026
Last change+13vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
OUST $25.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 3931960 2026-10-09: 353 OI2026-10-13: 354 OI2026-10-14: 354 OI2026-10-15: 381 OI2026-10-16: 365 OI2026-10-21: 380 OI2026-10-23: 393 OI Oct 09, 2026Oct 23, 2026

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

OUST contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026393+13
Oct 21, 2026Viewing380+15
Oct 16, 2026365-16
Oct 15, 2026381+27
Oct 14, 20263540
Oct 13, 2026354+1
Oct 09, 2026353No prior observation