NEW YORK ( TheStreet) -- Calumet Specialty Products Partners (Nasdaq: CLMT) is trading at unusually high volume Thursday with 821,032 shares changing hands. It is currently at four times its average daily volume and trading down $1.36 (-7%) at $18.15 as of 11:15 a.m. ET. Calumet Specialty has a market cap of $793.6 million and is part of the basic materials sector and energy industry. Shares are down 8.4% year to date as of the close of trading on Wednesday. Calumet Specialty Products Partners, L.P. produces and sells specialty hydrocarbon products in North America. It operates in two segments, Specialty Products and Fuel Products. The company has a P/E ratio of 26.2, above the average energy industry P/E ratio of 25.9 and above the S&P 500 P/E ratio of 17.7. TheStreet Ratings rates Calumet Specialty as a hold. The company's strengths can be seen in multiple areas, such as its robust revenue growth, notable return on equity and increase in stock price during the past year. However, as a counter to these strengths, we also find weaknesses including unimpressive growth in net income, generally poor debt management and poor profit margins. You can view the full Calumet Specialty 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.