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 72 points (-0.5%) at 15,564 as of Friday, Sept. 20, 2013, 12:54 PM ET. The NYSE advances/declines ratio sits at 854 issues advancing vs. 2,087 declining with 92 unchanged. The Services sector currently sits down 0.3% versus the S&P 500, which is down 0.4%. On the negative front, top decliners within the sector include Zillow ( Z), down 8.5%, Darden Restaurants ( DRI), down 6.0%, GameStop ( GME), down 5.0%, Lions Gate Entertainment Corporation ( LGF), down 4.3% and Kirby ( KEX), down 4.1%. Top gainers within the sector include Netflix ( NFLX), up 2.3%, eBay ( EBAY), up 1.1%, Royal Philips ( PHG), up 1.1%, Ryanair Holdings ( RYAAY), up 1.2% and Twenty-First Century Fox ( FOXA), up 0.8%. TheStreet would like to highlight 5 stocks pushing the sector lower today: 5. McKesson ( MCK) is one of the companies pushing the Services sector lower today. As of noon trading, McKesson is down $1.00 (-0.8%) to $131.02 on heavy volume. Thus far, 1.0 million shares of McKesson exchanged hands as compared to its average daily volume of 943,600 shares. The stock has ranged in price between $130.78-$132.62 after having opened the day at $131.90 as compared to the previous trading day's close of $132.01. McKesson Corporation, together with its subsidiaries, delivers pharmaceuticals, medical supplies, and health care information technologies to the healthcare industry primarily in the United States. It operates in two segments, McKesson Distribution Solutions and McKesson Technology Solutions. McKesson has a market cap of $30.0 billion and is part of the wholesale industry. Shares are up 35.2% year to date as of the close of trading on Thursday. Currently there are 7 analysts that rate McKesson a buy, no analysts rate it a sell, and 6 rate it a hold. TheStreet Ratings rates McKesson as a buy. The company's strengths can be seen in multiple areas, such as its revenue growth, good cash flow from operations, largely solid financial position with reasonable debt levels by most measures, solid stock price performance and growth in earnings per share. We feel these strengths outweigh the fact that the company shows low profit margins. Get the full McKesson 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.