Biggest Percentage Stock Losers are NASDAQ:AFFX, NGLS, CWS

Affymetrix, Inc. (NASDAQ:AFFX) decreases 11.49% to $5.70 after the company was downgraded to Underweight from Equal-Weight by Barclays and lowering their target to $3. Affymetrix, Inc. is engaged in the development, manufacture, sale and service of consumables and systems for genetic analysis in the life sciences and clinical healthcare markets.

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Targa Resources Partners LP (NASDAQ:NGLS) declines 4.43% to $23.09 on 1.01 million shares after the company announced the commencement of an underwritten public offering of 5,250,000 common units representing limited partner interests. The Partnership has also granted the underwriters a 30-day option to purchase up to 787,500 additional common units.

China Wind Systems, Inc. (NASDAQ:CWS) plunges 3.57% to $7.02. The stock hit an intraday high and an intraday low of $7.35 and $7 respectively. In the last six months the stock went up over 5%. Yesterday, China Wind Systems announced the appointment of Ying (Teresa) Zhang as the Company's new Chief Financial Officer, effective January 11, 2010.

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