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Contract OI history

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Dec 18, 2026 EXPIRATION

UPST $17.50 Put

UPST261218P00017500

Latest saved OI311Oct 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
UPST $17.50 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. 3111550 2026-10-09: 303 OI2026-10-13: 299 OI2026-10-14: 299 OI2026-10-15: 299 OI2026-10-16: 299 OI2026-10-21: 310 OI2026-10-23: 311 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, 2026Viewing311+1
Oct 21, 2026310+11
Oct 16, 20262990
Oct 15, 20262990
Oct 14, 20262990
Oct 13, 2026299-4
Oct 09, 2026303No prior observation