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Contract OI history

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Nov 20, 2026 EXPIRATION

OUST $28.00 Put

OUST261120P00028000

Latest saved OI358Oct 23, 2026
Last change+6vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
OUST $28.00 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. 3941970 2026-10-09: 211 OI2026-10-13: 394 OI2026-10-14: 394 OI2026-10-15: 348 OI2026-10-16: 340 OI2026-10-21: 352 OI2026-10-23: 358 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, 2026Viewing358+6
Oct 21, 2026352+12
Oct 16, 2026340-8
Oct 15, 2026348-46
Oct 14, 20263940
Oct 13, 2026394+183
Oct 09, 2026211No prior observation