Upstream Bio, Inc. (NASDAQ:UPB) plunged 31.6% in today's trading, closing at $8.75.
The Healthcare stock traded 6,490,182 shares, 14.9x 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.