NEW YORK ( TheStreet) -- STR Holdings (NYSE: STRI) is trading at unusually high volume Friday with 1.2 million shares changing hands. It is currently at four times its average daily volume and trading down $2.29 (-20.3%) at $9.01 as of 2:09 p.m. ET. STR has a market cap of $420.2 million and is part of the consumer goods sector and consumer non-durables industry. Shares are up 37.4% year to date as of the close of trading on Thursday. 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 12.2, above the average consumer non-durables industry P/E ratio of 5.3 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 disappointing return on equity, weak operating cash flow, poor profit margins, generally disappointing historical performance in the stock itself and feeble growth in its earnings per share. You can view the full STR 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.