NEW YORK ( TheStreet) -- Hercules Offshore (Nasdaq: HERO) is trading at unusually high volume Friday with 21.9 million shares changing hands. It is currently at 6.3 times its average daily volume and trading down 11 cents (-2.1%) at $5.10 as of 2:25 p.m. ET. Hercules has a market cap of $617.8 million and is part of the basic materials sector and energy industry. Shares are up 17.3% year to date as of the close of trading on Thursday. Hercules Offshore, Inc., together with its subsidiaries, provides shallow-water drilling and marine services to the oil and natural gas exploration and production industry worldwide. TheStreet Ratings rates Hercules as a hold. The company's strengths can be seen in multiple areas, such as its impressive record of earnings per share growth, compelling growth in net income and largely solid financial position with reasonable debt levels by most measures. 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 Hercules 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.