Editor's Note: TheStreet ratings do not represent the views of TheStreet's staff or its contributors. Ratings are established by computer based on metrics for performance (which includes growth, stock performance, efficiency and valuation) and risk (volatility and solvency). Companies with poor cash flow or high debt levels tend to earn lower ratings in our model All three major indices are trading down today with the Dow Jones Industrial Average ( ^DJI) trading down 87 points (-0.6%) at 14,874 as of Thursday, June 6, 2013, 12:50 PM ET. The NYSE advances/declines ratio sits at 1,317 issues advancing vs. 1,603 declining with 125 unchanged. The Metals & Mining industry currently sits up 0.3% versus the S&P 500, which is down 0.38. TheStreet Ratings group would like to highlight 4 stocks pushing the industry lower today: 4. Companhia Siderurgica Nacional ( SID) is one of the companies pushing the Metals & Mining industry lower today. As of noon trading, Companhia Siderurgica Nacional is down $0.08 (-2.6%) to $2.99 on light volume Thus far, 1.9 million shares of Companhia Siderurgica Nacional exchanged hands as compared to its average daily volume of 6.0 million shares. The stock has ranged in price between $2.96-$3.05 after having opened the day at $3.01 as compared to the previous trading day's close of $3.07. Companhia Siderurgica Nacional operates as an integrated steel producer primarily in Brazil. The company principally produces carbon steel and various steel products for automotive, home appliance, packaging, construction, and steel processing industries. Companhia Siderurgica Nacional has a market cap of $4.7 billion and is part of the basic materials sector. Shares are down 48.0% year to date as of the close of trading on Wednesday. Currently there are no analysts that rate Companhia Siderurgica Nacional a buy, 2 analysts rate it a sell, and 1 rates it a hold. TheStreet Ratings rates Companhia Siderurgica Nacional as a hold. The company's strongest point has been its a solid financial position based on a variety of debt and liquidity measures that we have looked at. At the same time, however, we also find weaknesses including declining revenues, poor profit margins and weak operating cash flow. Get the full Companhia Siderurgica Nacional Ratings Report now. STOCKS TO BUY: TheStreet Quant Ratings has identified a handful of stocks that can potentially TRIPLE in the next 12-months. Learn more.