These are Friday’s market winners and losers.

Biggest Winners

Shares of LinkedIn Corp. (NYSE: LNKD) are up 19.01% to $147.67, on trading volume of 5.1 million shares. The company reported a fourth-quarter profit of $0.35 a share, better than the $0.19 a share Wall St. analysts polled by Reuters expected. were projecting. Before Friday, the 52-week high was $127.45.

Shares of AOL Inc. (NYSE: AOL) are up 10.79% to $34.80. The company reported fourth-quarter sales of $599.5 million, better than the $573.7 million Wall St. analysts expected. The 52-week high is $43.93.

Biggest Losers

Shares of EnteroMedics Inc. (NASDAQ: ETRM) are down 57.01% to $1.22, on trading volume of 7 million shares. The company reported that its weight-loss device, VBLOC, failed in a study. Before Friday, the 52-week low was $1.95.

Shares of Riverbed Technology Inc. (NASDAQ: RVBD) are down 19.65% to $16.15, on trading volume of 9.3 million shares. Although fourth-quarter profit of $0.29 a share was in line with consensus estimates, the company projected first-quarter profits of $0.23 to $0.24 a share, below the $0.26 a share Wall St. expects. The 52-week low is $13.30.

Shares of Nuance Communications Inc. (NASDAQ: NUAN) are down 18.54% to $20.00, on trading volume of 13.4 million shares. Although first-quarter sales came in slightly above consensus estimates, the company’s earnings of $0.35 cents a share were a penny below Wall St. estimates. The 52-week low was $19.33.

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