Editor's Note: Any reference to TheStreet Ratings and its underlying recommendation does not reflect the opinion of TheStreet, Inc. or any of its contributors including Jim Cramer or Stephanie Link. Two out of the three major indices are trading lower today with the Dow Jones Industrial Average ( ^DJI) trading down 56 points (-0.3%) at 15,939 as of Wednesday, Feb. 12, 2014, 11:55 AM ET. The NYSE advances/declines ratio sits at 1,598 issues advancing vs. 1,323 declining with 154 unchanged. The Basic Materials sector currently sits up 0.3% versus the S&P 500, which is down 0.1%. On the negative front, top decliners within the sector include Seadrill ( SDRL), down 3.7%, Williams Companies ( WMB), down 2.2%, Newmont Mining Corporation ( NEM), down 2.0%, Gerdau ( GGB), down 1.9% and Goldcorp ( GG), down 1.6%. Top gainers within the sector include Valspar Corporation ( VAL), up 6.3%, Continental Resources ( CLR), up 2.6%, Canadian Natural Resources ( CNQ), up 2.2%, Imperial Oil ( IMO), up 2.0% and Enbridge ( ENB), up 2.0%. TheStreet would like to highlight 5 stocks pushing the sector lower today: 5. Southern Copper Corporation ( SCCO) is one of the companies pushing the Basic Materials sector lower today. As of noon trading, Southern Copper Corporation is down $0.21 (-0.7%) to $31.61 on average volume. Thus far, 1.2 million shares of Southern Copper Corporation exchanged hands as compared to its average daily volume of 2.3 million shares. The stock has ranged in price between $31.52-$32.47 after having opened the day at $32.00 as compared to the previous trading day's close of $31.82. Southern Copper Corporation engages in mining, exploring, producing, smelting, and refining copper and other minerals in Peru, Mexico, and Chile. Southern Copper Corporation has a market cap of $25.6 billion and is part of the metals & mining industry. Shares are up 10.8% year-to-date as of the close of trading on Tuesday. Currently there are 5 analysts that rate Southern Copper Corporation a buy, no analysts rate it a sell, and 3 rate it a hold. TheStreet Ratings rates Southern Copper Corporation as a buy. The company's strengths can be seen in multiple areas, such as its increase in net income, notable return on equity, largely solid financial position with reasonable debt levels by most measures and expanding profit margins. We feel these strengths outweigh the fact that the company has had lackluster performance in the stock itself. Get the full Southern Copper Corporation 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.