NEW YORK ( TheStreet) -- Shares of Rentech (AMEX: RTK) were gapping up Wednesday morning with an open price 10.8% higher than Tuesday's closing price. The stock closed at $1.20 Tuesday and opened today's trading at $1.33. The average volume for Rentech has been 1.5 million shares per day over the past 30 days. Rentech has a market cap of $272.5 million and is part of the basic materials sector and chemicals industry. Shares are down 1.6% year to date as of the close of trading on Tuesday. Rentech Inc. provides alternative and clean energy solutions; and manufactures and sells nitrogen fertilizer products. TheStreet Ratings rates Rentech as a hold. The company's strengths can be seen in multiple areas, such as its robust revenue growth, solid stock price performance and expanding profit margins. However, as a counter to these strengths, we find that the company has not been very careful in the management of its balance sheet. You can view the full Rentech Ratings Report. Get more investment ideas from our investment research center. Interested in other stocks that are gapping up? Get free SMS text alerts sent to you when the action happens by texting UP to 95370 or select from multiple alert options.