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Contract OI history

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Feb 19, 2027 EXPIRATION

OUST $25.00 Put

OUST270219P00025000

Latest saved OI1,228Oct 23, 2026
Last change+7vs 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. 1,2446220 2026-10-09: 1,239 OI2026-10-13: 1,239 OI2026-10-14: 1,239 OI2026-10-15: 1,240 OI2026-10-16: 1,244 OI2026-10-21: 1,221 OI2026-10-23: 1,228 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, 2026Viewing1,228+7
Oct 21, 20261,221-23
Oct 16, 20261,244+4
Oct 15, 20261,240+1
Oct 14, 20261,2390
Oct 13, 20261,2390
Oct 09, 20261,239No prior observation