Upstream Bio, Inc. (UPB)

Last Closing Price: 31.00 (2026-01-16)

Put-Call Ratio (Open Interest) (60-Day)

Put-Call Ratio (Open Interest): The ratio of outstanding put contracts to outstanding call contracts at the close of the trading day, for options with the relevant expiration date.

Upstream Bio, Inc. (UPB) had 60-Day Put-Call Ratio (Open Interest) of 0.6271 for 2026-01-16.