NEW YORK ( TheStreet) -- Koppers Holdings (NYSE: KOP) is trading at unusually high volume Friday with 432,575 shares changing hands. It is currently at 4.1 times its average daily volume and trading up $3.25 (+8.4%) at $42.13 as of 3:47 p.m. ET. Koppers has a market cap of $786.9 million and is part of the industrial goods sector and materials & construction industry. Shares are up 7.7% year to date as of the close of trading on Thursday. Koppers Holdings Inc., through its subsidiaries, provides carbon compounds and commercial wood treatment products to aluminum, railroad, specialty chemical, utility, rubber, concrete, and steel industries. The company has a P/E ratio of 17.9, below the average materials & construction industry P/E ratio of 18 and above the S&P 500 P/E ratio of 16. TheStreet Ratings rates Koppers as a buy. The company's strengths can be seen in multiple areas, such as its solid stock price performance, impressive record of earnings per share growth, compelling growth in net income, revenue growth and notable return on equity. We feel these strengths outweigh the fact that the company has had generally poor debt management on most measures that we evaluated. You can view the full Koppers 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 rising on unusually high volume? Get free SMS text alerts sent to you when the action happens by texting HVUP to 95370 or select from multiple alert options.