NEW YORK ( TheStreet) -- Atlas Pipeline Holdings (NYSE: AHD) is trading at unusually high volume Tuesday with 2.4 million shares changing hands. It is currently at 4.1 times its average daily volume and trading up 34 cents (+2.1%) at $16.83 as of 4:02 p.m. ET. Atlas Pipeline has a market cap of $436.3 million and is part of the utilities sector and utilities industry. Shares are up 10.1% year to date as of the close of trading on Monday. Atlas Energy, L.P., a midstream energy service company, engages in the gathering and processing of natural gas in the Mid-Continent and Appalachia regions. TheStreet Ratings rates Atlas Pipeline as a hold. The company's strengths can be seen in multiple areas, such as its solid stock price performance, revenue growth and growth in earnings per share. However, as a counter to these strengths, we find that the company's profit margins have been poor overall. You can view the full Atlas Pipeline Ratings Report. See all heavy volume stocks in our stocks moving on unusual volume list or get investment ideas from our investment research center.