NEW YORK ( TheStreet) -- Exterran Holdings (NYSE: EXH) is trading at unusually high volume Thursday with 3.2 million shares changing hands. It is currently at four times its average daily volume and trading down $3.57 (-20.6%) at $13.75 as of 3:56 p.m. ET.

Exterran has a market cap of $1.1 billion and is part of the basic materials sector and energy industry. Shares are down 27.7% year to date as of the close of trading on Wednesday.

Exterran Holdings, Inc., together with its subsidiaries, provides operations, maintenance, service, and equipment for oil and natural gas industry.

TheStreet Ratings rates Exterran as a sell. The company's weaknesses can be seen in multiple areas, such as its unimpressive growth in net income, generally weak debt management, poor profit margins, weak operating cash flow and generally disappointing historical performance in the stock itself. You can view the full Exterran Ratings Report.

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