MOST NOTEWORTHY: Cardionet, Molson Coors and TIM Participacoes were today's noteworthy initiations:

• Cardionet (NASDAQ: BEAT) initiated with an Overweight, target $29 at Thomas Weisel, who believes Cardionet is well positioned for future growth in the ambulatory monitoring market.
  
• Molson Coors Brewing Co. (NYSE: TAP) was initiated with a Market Perform, target $61 at BMO Capital.
  
• TIM Participacoes (NYSE: TSU) was re-initiated with an Outperform at Bear Stearns.

OTHER INITIATIONS:

• Invesco (NYSE: IVZ) was initiated with an Overweight at J.P. Morgan.
• Orion Marine Group (NASDAQ: OMGI) was initiated with a Buy, target of $18, at SMH Capital.
• Seattle Genetics Inc. (NASDAQ: SGEN) was initiated with a Neutral, target of $12, at Bank of America.

MOST NOTEWORTHY:

• B. Riley believes Pericom (NASDAQ: PSEM) is in the early stages of a product cycle-driven growth and feels shares are significantly undervalued at current levels. The firm started shares with a Buy rating and $18 target.
  
• Rodman & Renshaw started St. Jude Medical (NYSE: STJ) with a Market Outperform rating and $50 target. The firm is positive on St. Jude's recent investments in its CRM product portfolio and sales organization, which should increase competitiveness and facilitates continued market share gains.
  
• CDC Corp (NASDAQ: CHINA) was initiated at Cantor with a Buy rating and $6 target, as they believe the stock is significantly undervalued due to the complexity of the company's corporate structure and poor financial disclosure. The firm believes this gap will close after the company lists at least one of its subsidiaries this year.

• Kevin Dann initiated Orion Marine Group (NASDAQ: OMGI) with a Buy rating and $18 target.
  
• JP Morgan initiated Chimera Investment (NYSE: CIM) with a Neutral rating.
  
• Credit Suisse started Perrigo Company (NASDAQ: PRGO) with a Neutral rating and $40 target.