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 up today with the Dow Jones Industrial Average ( ^DJI) trading up 3 points (0.0%) at 15,545 as of Thursday, July 25, 2013, 12:49 PM ET. The NYSE advances/declines ratio sits at 1,346 issues advancing vs. 1,602 declining with 83 unchanged. The Basic Materials sector currently sits up 0.5% versus the S&P 500, which is unchanged. On the negative front, top decliners within the sector include PetroLogistics ( PDH), down 8.4%, Cameron International Corporation ( CAM), down 6.2%, Newfield Exploration Company ( NFX), down 5.1%, Diamond Offshore Drilling ( DO), down 4.2% and Seadrill ( SDRL), down 1.8%. Top gainers within the sector include Cabot Oil & Gas Corporation ( COG), up 7.2%, Range Resources Corporation ( RRC), up 5.7%, Consol Energy ( CNX), up 5.7%, Air Products & Chemicals ( APD), up 5.2% and Southwestern Energy Company ( SWN), up 4.5%. TheStreet would like to highlight 4 stocks pushing the sector lower today: 4. YPF Sociedad Anonima ( YPF) is one of the companies pushing the Basic Materials sector lower today. As of noon trading, YPF Sociedad Anonima is down $0.56 (-3.3%) to $16.19 on average volume. Thus far, 304,208 shares of YPF Sociedad Anonima exchanged hands as compared to its average daily volume of 688,900 shares. The stock has ranged in price between $16.05-$16.80 after having opened the day at $16.79 as compared to the previous trading day's close of $16.75. YPF SOCIEDAD ANONIMA, an energy company, engages in the exploration, development, and production of crude oil, natural gas, and liquefied petroleum gas (LPG) in Argentina. YPF Sociedad Anonima has a market cap of $6.7 billion and is part of the energy industry. Shares are up 16.7% year to date as of the close of trading on Wednesday. Currently there are no analysts that rate YPF Sociedad Anonima a buy, 1 analyst rates it a sell, and 1 rates it a hold. TheStreet Ratings rates YPF Sociedad Anonima as a hold. The company's strengths can be seen in multiple areas, such as its revenue growth, attractive valuation levels and solid stock price performance. However, as a counter to these strengths, we also find weaknesses including deteriorating net income, disappointing return on equity and weak operating cash flow. Get the full YPF Sociedad Anonima 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.