Tempur-Pedic International Inc, ACADIA Pharmaceuticals Inc, STMicroelectronics N.V, Silicon Graphics International, Select Comfort Corp, BG Medicine Inc, Molycorp Inc, Nokia Corporation are among the companies whose shares are moving in the pre-market trading Friday.

Tempur-Pedic International Inc (NYSE: TPX) stock climbed 17.11 percent to $44.91 in pre-market trading. The stock has a 52-week low of $20.70, a 52-week high of $87.43 and $2.29 billion in market capitalization.

ACADIA Pharmaceuticals Inc (NASDAQ: ACAD) stock advanced 5.93 percent to $6.25 in pre-market trading. The stock has a 52-week low of $1.29, a 52-week high of $6.53 and $351.97 million in market capitalization.

STMicroelectronics N.V. (NYSE: STM) stock advanced 4.75 percent to $8.60 in pre-market trading. The stock has a 52-week low of $4.51, a 52-week high of $8.60 and $7.29 billion in market capitalization.

Silicon Graphics International Corp. (NASDAQ: SGI) stock gained 3.42 percent to $12.39 in pre-market trading. Sterne Agee upgraded shares of Silicon Graphics International Corporation from a neutral rating to a buy rating in a research note issued to investors Friday. The firm currently has $19.00 target price on the stock.

Select Comfort Corp. (NASDAQ: SCSS) stock declined 15.50 percent to $23.83 in pre-market trading. The stock plunged after it declared fourth quarter results that missed Wall Street expectations and issued worse-than-expected full-year guidance.

BG Medicine Inc (NASDAQ:BGMD) stock declined 10.48 percent to $2.22 in pre-market trading. The stock has a 52-week low of $1.00, a 52-week high of $12.80 and $50.85 million in market capitalization.

Molycorp Inc. (NYSE: MCP) stock declined 2.40 percent to $6.90 in pre-market trading. The company announced Sunday the pricing of its public offering of 37,500,000 shares of its common stock at a price per share of $6.00 (the "Primary Shares Offering") and $150 million aggregate principal amount of its 5.50 percent Convertible Senior Notes due 2018 in separate registered public offerings.

Nokia Corporation (NYSE: NOK) stock was down by 1.64 percent to $4.19 in pre-market trading. The company reported a fourth-quarter net income was €202 million (US$270.1 million), or 5 cents per share, reversing the prior-year's loss of €1.07 billion, or 29 cents per share. Revenue fell 10 percent to €8.04 billion

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