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Contract OI history

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Oct 23, 2026 EXPIRATION

OUST $40.00 Put

OUST261023P00040000

Latest saved OI2Oct 23, 2026
Last change+2vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
OUST $40.00 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. 53260 2026-10-09: 26 OI2026-10-13: 37 OI2026-10-14: 37 OI2026-10-15: 51 OI2026-10-16: 53 OI2026-10-21: 0 OI2026-10-23: 2 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, 2026Viewing2+2
Oct 21, 20260-53
Oct 16, 202653+2
Oct 15, 202651+14
Oct 14, 2026370
Oct 13, 202637+11
Oct 09, 202626No prior observation