7 Stocks you need to know for Friday

The Wall Street Journal reported Bear Stearns (BSC | news | PowerRating | PR Charts ) is "facing increasingly tough trading conditions." BSC was the biggest decliner in the S&P 500, falling nearly 8%.

Aspect Medical Systems (ASPM | news | PowerRating | PR Charts ) plunged more than 45% after a report in the New England Journal of Medicine said the company devices were ineffective.

Humana (HUM | news | PowerRating | PR Charts ) gained more than 10%, after losing nearly 14% yesterday.

After the close, Aeropostale (ARO | news | PowerRating | PR Charts ) beat earnings estimates by $0.05.

Before the market open, AnnTaylor Stores (ANN | news | PowerRating | PR Charts ) is expected to reports earnings of $0.20.

Electronic Arts went hostile in its takeover bid for Take Two Interactive Software (TTWO | news | PowerRating | PR Charts ), offering shareholders $26 per share.