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 155 points (-1.0%) at 15,255 as of Wednesday, May 29, 2013, 12:50 PM ET. The NYSE advances/declines ratio sits at 466 issues advancing vs. 2,548 declining with 68 unchanged. The Metals & Mining industry currently sits down 0.14 versus the S&P 500, which is down 0.89. 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 $0.15 (-4.4%) to $3.27 on average volume Thus far, 3.9 million shares of Companhia Siderurgica Nacional exchanged hands as compared to its average daily volume of 5.9 million shares. The stock has ranged in price between $3.26-$3.38 after having opened the day at $3.36 as compared to the previous trading day's close of $3.42. 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 $5.1 billion and is part of the basic materials sector. Shares are down 42.0% year to date as of the close of trading on Tuesday. 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 strengths can be seen in multiple areas, such as its good cash flow from operations and expanding profit margins. However, as a counter to these strengths, we also find weaknesses including disappointing return on equity, a generally disappointing performance in the stock itself and deteriorating net income. 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.