Upstream Bio, Inc. (NASDAQ:UPB) plunged 32.5% in today's trading, closing at $8.63.
The Healthcare stock traded 5,777,149 shares, 13.2x its average daily volume of 437,049 shares.
Upstream Bio, Inc. has a market capitalization of $1.5B. The stock has gained 0.0% year-to-date.