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 79 points (-0.5%) at 15,419 as of Friday, Aug. 9, 2013, 12:50 PM ET. The NYSE advances/declines ratio sits at 1,348 issues advancing vs. 1,561 declining with 117 unchanged. The Services sector currently sits down 0.1% versus the S&P 500, which is down 0.2%. On the negative front, top decliners within the sector include Carnival Corporation ( CCL), down 1.7%, Delta Air Lines ( DAL), down 1.5%, Directv ( DTV), down 1.4%, Home Depot ( HD), down 1.3% and Luxottica Group ( LUX), down 1.3%. Top gainers within the sector include Priceline.com ( PCLN), up 5.1%, Amazon.com ( AMZN), up 1.1%, Royal Philips ( PHG), up 0.8% and CVS Caremark ( CVS), up 0.6%. TheStreet would like to highlight 5 stocks pushing the sector lower today: 5. Canadian National Railway ( CNI) is one of the companies pushing the Services sector lower today. As of noon trading, Canadian National Railway is down $1.09 (-1.1%) to $98.36 on average volume. Thus far, 225,706 shares of Canadian National Railway exchanged hands as compared to its average daily volume of 571,200 shares. The stock has ranged in price between $97.94-$99.20 after having opened the day at $99.10 as compared to the previous trading day's close of $99.45. Canadian National Railway Company, together with its subsidiaries, engages in rail and related transportation business in North America. Canadian National Railway has a market cap of $41.5 billion and is part of the transportation industry. Shares are up 9.3% year to date as of the close of trading on Thursday. Currently there are 4 analysts that rate Canadian National Railway a buy, 1 analyst rates it a sell, and 15 rate it a hold. TheStreet Ratings rates Canadian National Railway as a buy. The company's strengths can be seen in multiple areas, such as its revenue growth, growth in earnings per share, increase in net income, expanding profit margins and increase in stock price during the past year. We feel these strengths outweigh the fact that the company shows weak operating cash flow. Get the full Canadian National Railway 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.