VISICU, Inc. (NASDAQ: EICU): Philips Electronics is buying the company. The stock moved up to $11.76 from a 52-week low of $6.57.

Canadian Solar, Inc. (NASDAQ: CSIQ): Thanks to a big rally in renewable energy stocks, shares are up to $27.15 from a 52-week low of $6.50.

EMCORE Corporation (NASDAQ: EMKR): This company is buying a piece of Intel Coporation (NASDAQ: INTC)'s telecom assets. It traded up to $14.11 from 52-week low of $3.84.

Hess Corp. (NYSE: HES): The market is still bullish on oil prices and Hess moved to $90.57 from 52-week low of $45.96.

Douglas A. McIntyre is an editor at 247wallst.com.

Nextest Systems Corporation (NASDAQ: NEXT): Buy-out by Teradyne, Inc. (NYSE: TER) brings peaks at $19.64, up from 52-week low of $10.49.

OptionsXpress Holdings, Inc. (NASDAQ: OXPS): Broker says it had a big increase in November volume. Shares trade up to $32.50 against 52-week low of $20.78.

EMCORE Corporation (NASDAQ: EMKR): Lands deal to provide parts for solar-power systems in Canada. Up to $11.67 from 52-week low of $3.84.

Hess Corp. (NYSE: HES): Price of crude jumps 5% to multi-week high. Shares move up to $82.48 from 52-week low of $45.96.

Celanese Corporation (NYSE: CE): Chemical company raises full-year outlook. Trades up to $43.72 from 52-week low of $22.56.

Douglas A. McIntyre is an editor at 247wallst.com.