NEW YORK ( TheStreet) -- Shares of STR Holdings (NYSE: STRI) were gapping down Tuesday morning with an open price 16% lower than Monday's closing price. The stock closed at $8.68 Monday and opened today's trading at $7.29. The average volume for STR has been 499,000 shares per day over the past 30 days. STR has a market cap of $374.9 million and is part of the consumer goods sector and consumer non-durables industry. Shares are down 54.9% year to date as of the close of trading on Monday. STR Holdings, Inc., through its subsidiaries, engages in the manufacture and sale of encapsulants to the solar module industry. The encapsulants are used in the production of solar modules. The company operates in two segments, Solar and Quality Assurance (QA). The company has a P/E ratio of 8.1, equal to the average consumer non-durables industry P/E ratio and below the S&P 500 P/E ratio of 17.7. TheStreet Ratings rates STR as a sell. The company's weaknesses can be seen in multiple areas, such as its unimpressive growth in net income, disappointing return on equity, weak operating cash flow, generally disappointing historical performance in the stock itself and feeble growth in its earnings per share. You can view the full STR Ratings Report. Get more investment ideas from our investment research center. Interested in other stocks that are gapping down? Get free SMS text alerts sent to you when the action happens by texting DOWN to 95370 or select from multiple alert options.