NEW YORK ( TheStreet) -- Clean Energy Fuels Corporation (Nasdaq: CLNE) is trading at unusually high volume Wednesday with 3.9 million shares changing hands. It is currently at four times its average daily volume and trading down $1.96 (-8.5%) at $21.04 as of 2:15 p.m. ET. Clean Energy has a market cap of $1.05 billion and is part of the utilities sector and utilities industry. Shares are up 84.6% year to date as of the close of trading on Tuesday. Clean Energy Fuels Corp., together with its subsidiaries, provides natural gas as an alternative fuel for vehicle fleets in the United States and Canada. The company has a P/E ratio of 34.3, above the S&P 500 P/E ratio of 17.7. TheStreet Ratings rates Clean Energy as a hold. The company's strengths can be seen in multiple areas, such as its solid stock price performance, revenue growth and largely solid financial position with reasonable debt levels by most measures. However, as a counter to these strengths, we also find weaknesses including deteriorating net income, disappointing return on equity and poor profit margins. You can view the full Clean Energy 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.