NEW YORK ( TheStreet) -- Petroleum Development Corporation (Nasdaq: PETD) is trading at unusually high volume Wednesday with 1.9 million shares changing hands. It is currently at 4.4 times its average daily volume and trading down 97 cents (-3.6%) at $26.28 as of 9:36 a.m. ET. Petroleum Development has a market cap of $698.1 million and is part of the basic materials sector and energy industry. Shares are down 22.4% year to date as of the close of trading on Tuesday. Petroleum Development Corporation, doing business as PDC Energy, engages in the acquisition, exploration, development, production, and marketing of natural gas, natural gas liquids, and crude oil in the United States. The company has a P/E ratio of 25, above the average energy industry P/E ratio of 14.3 and above the S&P 500 P/E ratio of 17.7. TheStreet Ratings rates Petroleum Development as a hold. The company's strengths can be seen in multiple areas, such as its robust revenue growth, compelling growth in net income and good cash flow from operations. However, as a counter to these strengths, we also find weaknesses including a generally disappointing performance in the stock itself, disappointing return on equity and generally poor debt management. You can view the full Petroleum Development Ratings Report. See all heavy volume stocks in our stocks moving on unusual volume list or get investment ideas from our investment research center.