Ratings on (AIXG) (ALTH) (BCON) (ATHR) (BMY) Downgraded

Ratings on shares of Aixtron AG (NASDAQ: AIXG), Allos Therapeutics Incorporated (NASDAQ: ALTH), Beacon Power Corp. (NASDAQ: BCON), Atheros Communications (NASDAQ: ATHR) and Bristol Myers Squibb Co. (NYSE: BMY) were downgraded by analysts.

Canaccord Genuity downgraded Aixtron AG (AIXG) from a “hold” rating to a “sell” rating.

Needham & Company downgraded Allos Therapeutics Incorporated (ALTH) from a “buy” rating to a “hold” rating.

FBR Capital downgraded Atheros Communications (ATHR) from an “outperform” rating to a “market perform” rating. They have a price target of $45.00 on the company.

Ardour Capital downgraded Beacon Power Corp. (BCON) from an “accumulate” rating to a “hold” rating. They have a price target $1.50 on the company, down from $3.00.

Goldman Sachs (NYSE:GS) downgraded Bristol Myers Squibb Co. (BMY) to a “neutral” rating. They have a price target of $77.00 on the company.