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The stock market is up Monday, with the Dow Jones Industrial Average up 1.24%, the Nasdaq up 1.54% and the S&P 500 up 1.48%. Today’s winners include a health care company getting bought out, an Internet company whose looking to divest assets and a food company reporting strong earnings. Meanwhile, today’s sole loser is a food company that continues to get hit from having to restate two year’s worth of financials.

These are Monday’s market winners and loser.

Biggest Winners

Shares of BioMimetic Therapeutics Inc. (NASDAQ: BMTI) are up 67.71% to $6.96 on trading volume of 1.6 million shares. Wright Medical Group (NASDAQ: WMGI) has agreed to buy the company for up to $380 million in cash and stock, the companies announced Monday. Before Monday, the 52-week high was $4.83.

Shares of SINA Corportation (NASDAQ: SINA) are up 9.98% to $49.57 on trading volume of 4.3 million shares.  News reports have surfaced that Alibaba Group is interested in buying a stake in the company’s Weibo platform, which has been compared to Twitter. The 52-week high is $80.80.

Shares of Tyson Foods Inc. (NYSE: TSN) are up 8.95% to $18.39 on trading volume of 7 million shares. The company reported fourth-quarter earnings of 51 cents a share, better than the 44 cents a share Wall Street analysts expected. The 52-week high is $21.06.

Biggest Loser

Shares of Diamond Foods Inc. (NASDAQ: DMND) are down 10.77% to $13.50 on trading volume of 1.3 million shares.  The company’s shares have been hurt since mid-last week when the firm restated two years of financials that cut profits by about $56.5 million.  Before Monday, the 52-week low was $14.50.

Samuel Weigley