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. One out of the three major indices are trading up today with the Dow Jones Industrial Average ( ^DJI) trading down 8 points (0.0%) at 18,060 as of Wednesday, May 13, 2015, 12:55 PM ET. The NYSE advances/declines ratio sits at 1,739 issues advancing vs. 1,263 declining with 123 unchanged. The Services sector currently is unchanged today versus the S&P 500, which is up 0.1%. Top gainers within the sector include Aecom ( ACM), up 6.5%, Delta Air Lines ( DAL), up 2.3%, Rockwell Automation ( ROK), up 1.8%, Gol Intelligent Airlines ( GOL), up 1.6% and Ryanair Holdings ( RYAAY), up 1.2%. On the negative front, top decliners within the sector include Union Pacific ( UNP), down 3.3%, Canadian National Railway ( CNI), down 3.1%, Canadian Pacific Railway ( CP), down 2.8%, W W Grainger ( GWW), down 2.5% and CSX ( CSX), down 2.4%. TheStreet would like to highlight 3 stocks pushing the sector higher today: 3. McKesson ( MCK) is one of the companies pushing the Services sector higher today. As of noon trading, McKesson is up $3.99 (1.7%) to $233.54 on heavy volume. Thus far, 1.2 million shares of McKesson exchanged hands as compared to its average daily volume of 924,400 shares. The stock has ranged in price between $231.89-$236.00 after having opened the day at $232.97 as compared to the previous trading day's close of $229.55. EXCLUSIVE OFFER: See inside Jim Cramer's multi-million dollar charitable trust portfolio to see the stocks he thinks could be potential winners. Click here to see his holdings for 14-days FREE. McKesson Corporation delivers pharmaceuticals, medical supplies, and health care information technologies to the healthcare industry in the United States and internationally. The company operates in two segments, McKesson Distribution Solutions and McKesson Technology Solutions. McKesson has a market cap of $53.2 billion and is part of the wholesale industry. Shares are up 10.1% year-to-date as of the close of trading on Tuesday. Currently there are 14 analysts who rate McKesson a buy, no analysts rate it a sell, and 1 rates it a hold. TheStreet Ratings rates McKesson as a buy. The company's strengths can be seen in multiple areas, such as its robust revenue growth, notable return on equity, good cash flow from operations, impressive record of earnings per share growth and compelling growth in net income. We feel its strengths outweigh the fact that the company has had generally high debt management risk by most measures that we evaluated. Get the full McKesson Ratings Report now. EXCLUSIVE OFFER: See inside Jim Cramer's multi-million dollar charitable trust portfolio to see the stocks he thinks could be potential winners. Click here to see his holdings for 14-days FREE.