NEW YORK ( TheStreet) -- Enerplus (NYSE: ERF) is trading at unusually high volume Wednesday with 3.8 million shares changing hands. It is currently at 4.1 times its average daily volume and trading down 56 cents (-2.4%) at $23.12 as of 3:59 p.m. ET. Enerplus has a market cap of $4.43 billion and is part of the basic materials sector and energy industry. Shares are down 6.5% year to date as of the close of trading on Tuesday. Enerplus Corporation operates as an independent oil and gas producer. The company has a P/E ratio of 5.9, below the average energy industry P/E ratio of 10.6 and below the S&P 500 P/E ratio of 17.7. TheStreet Ratings rates Enerplus as a hold. The company's strengths can be seen in multiple areas, such as its revenue growth, compelling growth in net income and expanding profit margins. However, as a counter to these strengths, we also find weaknesses including weak operating cash flow and a generally disappointing performance in the stock itself. You can view the full Enerplus Ratings Report. See all heavy volume stocks in our stocks moving on unusual volume list or get investment ideas from our investment research center. Interested in other stocks that are falling on unusually high volume? Get free SMS text alerts sent to you when the action happens by texting HVDOWN to 95370 or select from multiple alert options.