Ardea Biosciences, Inc. (NASDAQ:RDEA) gained 51.7% after the company agreed to be purchased by the AstraZeneca plc (NYSE:AZN) at a price of $1.26 billion
Shares of Helix Energy Solutions Group Inc. (NYSE:HLX) soared 6.7% after the company reported better-than-expected first quarter earnings per share of $0.73, surpassing the Zacks Consensus Estimate of $0.44
Kellogg Company (NYSE:K) lost 6.1% after the cereal and snacks maker said its actual full … [visit site to read more] or compare Credit Card Rewards and Best Credit Cards