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Contract OI history

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Nov 20, 2026 EXPIRATION

OUST $50.00 Put

OUST261120P00050000

Latest saved OI154Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
OUST $50.00 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. 2141070 2026-10-09: 214 OI2026-10-13: 214 OI2026-10-14: 214 OI2026-10-15: 214 OI2026-10-16: 214 OI2026-10-21: 154 OI2026-10-23: 154 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, 2026Viewing1540
Oct 21, 2026154-60
Oct 16, 20262140
Oct 15, 20262140
Oct 14, 20262140
Oct 13, 20262140
Oct 09, 2026214No prior observation