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Contract OI history

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Nov 20, 2026 EXPIRATION

OUST $20.00 Put

OUST261120P00020000

Latest saved OI545Oct 23, 2026
Last change-1vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
OUST $20.00 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. 5462730 2026-10-09: 479 OI2026-10-13: 479 OI2026-10-14: 479 OI2026-10-15: 431 OI2026-10-16: 516 OI2026-10-21: 546 OI2026-10-23: 545 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, 2026545-1
Oct 21, 2026Viewing546+30
Oct 16, 2026516+85
Oct 15, 2026431-48
Oct 14, 20264790
Oct 13, 20264790
Oct 09, 2026479No prior observation