The companies whose shares are moving in pre-market trading on Friday are: Pluristem Therapeutics Inc, Mechel OAO, Zynga Inc, JPMorgan Chase & Co, Citigroup Inc, Morgan Stanley and Apartment Investment and Management Co.

Pluristem Therapeutics Inc (PSTI) stock climbed 13.85 percent to $2.96 in pre-market trading. The stock has a 52-week low of $1.98, a 52-week high of $3.66 and $115.30 million in market capitalization.

Mechel OAO (MTL) stock climbed 2.48 percent to $7.44 in pre-market trading. The company's board recommended a dividend of 8.06 rubles ($0.27) per one ordinary share.

Zynga Inc (ZNGA) stock rose 1.41 percent to $7.93 in pre-market trading. The stock has a 52-week low of $7.58, a 52-week high of $15.91 and $5.76 billion in market capitalization.

JPMorgan Chase & Co (JPM) stock declined 5.89 percent to $38.34 in pre-market session. The report from JPMorgan Chase & Co, which said that it had lost $2 billion in a trading hedge strategy that failed, raised the concerns of investors. JPMorgan made the losses on derivatives meant to hedge its credit risk.

Citigroup Inc (C) stock fell 2.45 percent to $29.90 in pre-market trading. There is anxiety among investors that the renewed euro zone crisis, as Greece struggles to form a government, could result in a contagion effect leading to widespread bank rating downgrade.

Morgan Stanley (MS) stock fell 2.82 percent to $15.16 in pre-market trading. The debt crisis threatening the euro zone and the subsequent Moody's downgrades have also affected Morgan Stanley.

Apartment Investment and Management Co (AIV) stock slumped 2.41 percent to $27.10 in the pre-market session. The company launched a public offering of 11 million shares of its common stock.

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