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.

MOST NOTEWORTHY: Visicu, Inc (EICU), Ciena Corp (CIEN), Apple Inc (AAPL) and Time Warner Cable (TWC) were some of today's more notable initiations:

• Prudential started Visicu Inc (NASDAQ: EICU) with an Underweight rating and $7 target and said competitor substitute ICU modules, hesitant customers and patent challenges could impact future sales activity.

• RBC initiated Ciena Corp (NASDAQ: CIEN) with an Outperform rating and $33 target based on improving demand outlook driven by growth in video and data-traffic.

• W.R. Hambrecht initiated shares of Apple Inc (NASDAQ: AAPL) with a Buy rating and $110 target based on the company's impressive desktop and notebook offering that continues to grow faster than the industry and command higher ASPs, an iPod franchise that dominates the category and represented almost half of total company revenues in the strongest quarter in its history, December 2006, among other things.

• Deutsche Bank initiated Time Warner Cable (NYSE: TWC) with a Buy rating and $46 target. The firm is bullish on cable sector prospects and sees upside from consumer and commercial telecom services and growth in advanced video services.

OTHER INITIATIONS:

• RBC started F5 Networks, Inc (NASDAQ: FFIV) with an Outperform rating and $90 target.

• Stanford initiated HealthSouth Corp (NYSE: HLS) with a Buy rating and $31 target.

• Kenexa Corp (NASDAQ: KNXA) was started at Jefferies with a Hold rating and $36 target.

• Stern Agee initiated Chico's FAS, Inc (NYSE: CHS) with a Buy rating and $26 target.

• JP Morgan initiated Red Hat, Inc (NYSE: RHT) with a Neutral rating.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).