Analyst initiations: ATHN, MRVL, BRCM and NVDA

MOST NOTEWORTHY: Athenahealth, Marvell Technology, Broadcom and Nvidia were today's noteworthy initiations:

Athenahealth (NASDAQ: ATHN) was initiated with a Neutral rating at Goldman Sachs. Jefferies started shares of the stock with a Buy rating and $46 target, as they believe their estimates could prove conservative given potential upside from new and existing physicians adopting athenaClinicals.
Kaufman Bros initiated Marvell Technology (NASDAQ: MRVL) with a Hold rating and $18 target, as they believe near-term growth prospects remain uncertain and recommends waiting for more favorable entry points.
The firm also initiated Broadcom Corporation (NASDAQ: BRCM) with a Hold rating and $35 target, and believes the company's growth prospects are priced into shares following the recent rally, and started shares of Nvidia Corporation (NASDAQ: NVDA) with a Buy rating and $42 target, as they believe the company's growth opportunity and competitive strength remain intact and would be buyers at current levels.

OTHER INITIATIONS:

Goldman started shares of Sara Lee (NYSE: SLE) with a Neutral rating and $16 target.
UBS initiated US BioEnergy (NASDAQ: USBE) with a Neutral rating.
Bear Stearns inititated CarMax (NYSE: KMX) with an Underperform rating.
Wachovia started Teekay Offshore Partners (NYSE: TOO) and Holly Energy Partners (NYSE: HEP) with Market Perform ratings.