Thursday's Health Winners & Losers

Updated from 2:37 p.m. EDT with new stock prices

Biotech stocks hit a high for the week as investors applauded an acquisition and showed the same enthusiasm that graced the broader markets.

The Amex biotechnology index surged 35.83, or 4.8%, to 780.83, with some notable support from component Millennium Pharmaceuticals (MLNM Quote), which rose nearly 50%.

Millennium Pharmaceuticals said Thursday that it will be acquired by Japan's largest drugmaker, Takeda Pharmaceuticals, in a deal worth $8.8 billion -- the largest overseas acquisition by a Japanese drugmaker to date. Takeda is paying $25 a share, or a 53% premium to Millennium's closing price of $16.35 a share on Wednesday. Shares rose $7.99, or 48.9%, to $24.34. ...