Pre-Market Movers (Idenix, Dell, Rio Tinto, Boston Scientific, Facebook, Dynavax, RIM, Bankrate)

Idenix Pharmaceuticals, Dell, Rio Tinto, Boston Scientific, Facebook, Dynavax Technologies, Research In Motion and Bankrate Inc. are among the companies whose shares are moving in pre-market trading Monday.

Idenix Pharmaceuticals Inc. (IDIX) stock climbed 10.26 percent to $5.64 in pre-market trading. The company stock was initiated with a “buy” rating with a price target of $7 at Deutsche Bank last week.

Dell Inc. (DELL) stock surged 4.05 percent to $10.03 in pre-market trading. The stock has a 52-week low of $8.69, a 52-week high of $18.36 and $16.72 billion in market capitalization.

Rio Tinto Plc. (RIO) stock gained 1.31 percent to $50.45 in pre-market trading. The stock has a 52-week low of $41.59, a 52-week high of $63.18 and $91.98 billion in market capitalization.

Boston Scientific Corp. (BSX) stock advanced 1.08 percent to $5.60 in pre-market trading. The company stock was upgraded to a “buy” rating from a “neutral” rating with a price target of $7.30 at Citigroup last week.

Facebook Inc. (FB) stock gained 1.18 percent to $28.33 in pre-market trading. Facebook and Zynga have amended a two-year-old contract to become less attached to each other.

Dynavax Technologies Corp. (DVAX) stock tumbled 14.08 percent to $2.44 in pre-market trading. The stock has a 52-week low of $2.22, a 52-week high of $5.34 and $507.53 million in market capitalization.

Research In Motion Ltd. (RIMM) stock fell 1.29 percent to $11.45 in pre-market trading. The company stock rallied last week after it was upgraded to a “buy” rating from a “neutral” rating with a price target of $16 at Goldman Sachs.

Bankrate Inc. (RATE) stock fell 1.66 percent to $11.83 in pre-market trading. The stock has a 52-week low of $10.01, a 52-week high of $25.95 and $1.20 billion in market capitalization.