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Contract OI history

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Dec 18, 2026 EXPIRATION

UPST $27.50 Put

UPST261218P00027500

Latest saved OI385Oct 23, 2026
Last change-3vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
UPST $27.50 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. 3881940 2026-10-09: 362 OI2026-10-13: 361 OI2026-10-14: 361 OI2026-10-15: 363 OI2026-10-16: 363 OI2026-10-21: 388 OI2026-10-23: 385 OI Oct 09, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

UPST contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026385-3
Oct 21, 2026Viewing388+25
Oct 16, 20263630
Oct 15, 2026363+2
Oct 14, 20263610
Oct 13, 2026361-1
Oct 09, 2026362No prior observation