GenMark Diagnostics (GNMK) – GenMark will be bought by Swiss drugmaker Roche for $1.8 billion in cash, or $24.05 per share. Shares of the U.S.-based molecular diagnostic test maker had closed at $18.50 per share on Friday. GenMark surged 29.2% in premarket action.
NXP Semiconductors (NXPI), Penn National Gaming (PENN), Generac (GNRC), Caesars Entertainment (CZR) – The stocks will join the S&P 500 as part of the index’s quarterly rebalancing. NXP jumped 8.1% in premarket trading, with Penn up 5.8%, Generac gaining 3.6% and Caesars climbing 4.8%.
