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. All three major indices are trading up today with the Dow Jones Industrial Average ( ^DJI) trading up 80 points (0.5%) at 15,453 as of Tuesday, Feb. 4, 2014, 11:55 AM ET. The NYSE advances/declines ratio sits at 2,024 issues advancing vs. 894 declining with 170 unchanged. The Basic Materials sector currently sits up 0.5% versus the S&P 500, which is up 0.7%. On the negative front, top decliners within the sector include Helmerich & Payne ( HP), down 3.2%, Valero Energy Corporation ( VLO), down 2.4%, Phillips 66 ( PSX), down 1.3%, Suncor Energy ( SU), down 1.1% and Barrick Gold Corporation ( ABX), down 0.9%. Top gainers within the sector include YPF Sociedad Anonima ( YPF), up 5.5%, Pioneer Natural Resources Company ( PXD), up 4.3%, Cabot Oil & Gas Corporation ( COG), up 3.5%, Encana ( ECA), up 3.2% and Range Resources Corporation ( RRC), up 3.2%. TheStreet would like to highlight 3 stocks pushing the sector lower today: 3. Sunoco Logistics Partners ( SXL) is one of the companies pushing the Basic Materials sector lower today. As of noon trading, Sunoco Logistics Partners is down $2.48 (-3.1%) to $76.37 on average volume. Thus far, 83,111 shares of Sunoco Logistics Partners exchanged hands as compared to its average daily volume of 176,100 shares. The stock has ranged in price between $76.15-$80.34 after having opened the day at $78.02 as compared to the previous trading day's close of $78.85. Sunoco Logistics Partners L.P. engages in the transport, terminalling, and storage of crude oil and refined products in the United States. The company operates in four segments: Crude Oil Pipelines, Crude Oil Acquisition and Marketing, Terminal Facilities, and Refined Products Pipelines. Sunoco Logistics Partners has a market cap of $8.2 billion and is part of the energy industry. The company has a P/E ratio of 14.5, below the S&P 500 P/E ratio of 17.7. Shares are up 4.5% year-to-date as of the close of trading on Monday. Currently there are 2 analysts that rate Sunoco Logistics Partners a buy, no analysts rate it a sell, and 6 rate it a hold. TheStreet Ratings rates Sunoco Logistics Partners as a buy. The company's strengths can be seen in multiple areas, such as its robust revenue growth, solid stock price performance, good cash flow from operations and largely solid financial position with reasonable debt levels by most measures. We feel these strengths outweigh the fact that the company has had sub par growth in net income. Get the full Sunoco Logistics Partners 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.