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The stock market is up Tuesday, with the Dow Jones Industrial Average up 0.79%, the Nasdaq up 0.92% and the S&P 500 up 0.87%. Today’s winners are a media company and a biotherapeutics company reporting that they are in the process of selling their respective companies. Today’s losers include a search-engine company whose financials caused some concern among investors and a coal company who reported worse-than-expected earnings.

These are Tueday’s market winners and losers.

Biggest Winners

Shares of Virgin Media Inc. (NASDAQ: VMED) are up 16.96% to $45.25 on trading volume of 19.6 million shares. The company is in talks with Liberty Global Inc. (NASDAQ: LBTYA) over a takeover. Before Tuesday, the 52-week high was $40.25.

Shares of Protalix BioTherapeutics Inc. (NYSEMKT: PLX) are up 16.79% t0 $6.26 on trading volume of 4.3 million shares. The company is looking to sell for about $1 billion. The 52-week high is $7.70.

Biggest Losers

Shares of Baidu Inc. (NASDAQ: BIDU) are down 10.63% to $95.80 on trading volume of 10.7 million shares. While the company reported higher profits in the fourth quarter compared to a year earlier, analysts expressed concern that the company has not monetized mobile enough and is concerned about a stagnant market share. The 52-week low is $85.96.

Shares of Arch Coal Inc. (NYSE: ACI) are down 8.23% to $6.36 on trading volume of 14.5 million shares. The company lost $0.42 a share in the fourth quarter, far worse than the $0.17 a share loss Wall St. analysts were expecting. The 52-week low is $5.16.

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