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 down today with the Dow Jones Industrial Average ( ^DJI) trading down 83 points (-0.5%) at 16,448 as of Tuesday, May 6, 2014, 12:55 PM ET. The NYSE advances/declines ratio sits at 1,223 issues advancing vs. 1,760 declining with 164 unchanged. The Services sector currently sits down 0.4% versus the S&P 500, which is down 0.4%. On the negative front, top decliners within the sector include AthenaHealth ( ATHN), down 13.4%, MWI Veterinary Supply ( MWIV), down 10.1%, YY ( YY), down 6.0%, Pandora Media ( P), down 5.9% and Discovery Communications ( DISCA), down 3.5%. Top gainers within the sector include Office Depot ( ODP), up 16.7%, AerCap Holdings ( AER), up 4.1%, Moody's Corporation ( MCO), up 2.3%, Grupo Televisa SAB ( TV), up 1.1% and McGraw Hill Financial ( MHFI), up 0.8%. TheStreet would like to highlight 3 stocks pushing the sector lower today: 3. Comcast ( CMCSA) is one of the companies pushing the Services sector lower today. As of noon trading, Comcast is down $0.45 (-0.9%) to $52.01 on light volume. Thus far, 6.4 million shares of Comcast exchanged hands as compared to its average daily volume of 18.2 million shares. The stock has ranged in price between $51.89-$52.33 after having opened the day at $52.10 as compared to the previous trading day's close of $52.46. Comcast Corporation operates as a media and technology company worldwide. It operates through Cable Communications, Cable Networks, Broadcast Television, Filmed Entertainment, and Theme Parks segments. Comcast has a market cap of $111.7 billion and is part of the media industry. The company has a P/E ratio of 19.1, above the S&P 500 P/E ratio of 17.7. Shares are up 0.9% year-to-date as of the close of trading on Monday. Currently there are 18 analysts that rate Comcast a buy, no analysts rate it a sell, and 3 rate it a hold. TheStreet Ratings rates Comcast as a buy. The company's strengths can be seen in multiple areas, such as its revenue growth, solid stock price performance, growth in earnings per share, attractive valuation levels and good cash flow from operations. We feel these strengths outweigh the fact that the company shows low profit margins. Get the full Comcast 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.