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 Services sector currently sits down 0.10 versus the S&P 500, which is down 0.38. On the negative front, top decliners within the sector include Ascena Retail Group ( ASNA), down 10.42, US Airways Group ( LCC), down 4.60, United Continental Holdings ( UAL), down 4.11, Netflix ( NFLX), down 3.51 and Southwest Airlines ( LUV), down 2.71. Top gainers within the sector include Liberty Media Corporation ( LMCA), up 11.0%, Home Depot ( HD), up 1.6%, AutoZone ( AZO), up 1.1%, Canadian Pacific Railway ( CP), up 0.9% and Sirius XM Radio ( SIRI), up 1.1%. TheStreet Ratings group would like to highlight 5 stocks pushing the sector lower today: 5. Discovery Communications ( DISCA) is one of the companies pushing the Services sector lower today. As of noon trading, Discovery Communications is down $1.44 (-1.9%) to $74.44 on average volume Thus far, 879,840 shares of Discovery Communications exchanged hands as compared to its average daily volume of 1.4 million shares. The stock has ranged in price between $74.18-$75.88 after having opened the day at $75.67 as compared to the previous trading day's close of $75.88. Discovery Communications, Inc. operates as a non fiction media company worldwide. It operates through three segments: U.S. Networks, International Networks, and Education. The company provides original and purchased content across various distribution platforms. Discovery Communications has a market cap of $11.5 billion and is part of the media industry. The company has a P/E ratio of 30.6, above the S&P 500 P/E ratio of 17.7. Shares are up 24.0% year to date as of the close of trading on Wednesday. Currently there are 8 analysts that rate Discovery Communications a buy, no analysts rate it a sell, and 12 rate it a hold. TheStreet Ratings rates Discovery Communications as a buy. The company's strengths can be seen in multiple areas, such as its revenue growth, largely solid financial position with reasonable debt levels by most measures, solid stock price performance, growth in earnings per share and expanding profit margins. We feel these strengths outweigh the fact that the company shows weak operating cash flow. Get the full Discovery Communications 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.