NEW YORK ( TheStreet) -- Golden Star Resources (AMEX: GSS) is trading at unusually high volume Friday with 8.7 million shares changing hands. It is currently at 4.5 times its average daily volume and trading down 16 cents (-11.7%) at $1.16 as of 2:40 p.m. ET. Golden Star has a market cap of $328.8 million and is part of the basic materials sector and metals & mining industry. Shares are down 20% year to date as of the close of trading on Thursday. Golden Star Resources Ltd., through its subsidiaries, engages in the acquisition, exploration, development, and operation of gold properties. The company has a P/E ratio of 127, below the average metals & mining industry P/E ratio of 317.5 and above the S&P 500 P/E ratio of 17.7. TheStreet Ratings rates Golden Star as a sell. The company's weaknesses can be seen in multiple areas, such as its poor profit margins, weak operating cash flow and generally disappointing historical performance in the stock itself. You can view the full Golden Star Ratings Report. See all heavy volume stocks in our stocks moving on unusual volume list or get investment ideas from our investment research center.