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 up today with the Dow Jones Industrial Average ( ^DJI) trading up 79 points (0.5%) at 15,467 as of Wednesday, May 22, 2013, 12:50 PM ET. The NYSE advances/declines ratio sits at 1,746 issues advancing vs. 1,183 declining with 133 unchanged. The Services sector currently sits up 0.3% versus the S&P 500, which is up 0.5%. Top gainers within the sector include Liberty Media Corporation ( LMCA), up 14.0%, Saks Incorporated ( SKS), up 13.8%, Staples ( SPLS), up 4.8%, Home Depot ( HD), up 2.6% and Best Buy ( BBY), up 1.7%. On the negative front, top decliners within the sector include Target ( TGT), down 3.62, Priceline.com ( PCLN), down 1.81, SBA Communications ( SBAC), down 1.47, Netflix ( NFLX), down 1.23 and Moody's Corporation ( MCO), down 0.86. TheStreet Ratings group would like to highlight 5 stocks pushing the sector higher today: 5. Costco Wholesale Corporation ( COST) is one of the companies pushing the Services sector higher today. As of noon trading, Costco Wholesale Corporation is up $0.65 (0.57) to $114.13 on average volume Thus far, 1.3 million shares of Costco Wholesale Corporation exchanged hands as compared to its average daily volume of 1.9 million shares. The stock has ranged in price between $113.33-$114.72 after having opened the day at $113.33 as compared to the previous trading day's close of $113.48. Costco Wholesale Corporation engages in the operation of membership warehouses. The company offers branded and private-label products in a range of merchandise categories. Costco Wholesale Corporation has a market cap of $48.9 billion and is part of the retail industry. The company has a P/E ratio of 25.1, above the S&P 500 P/E ratio of 17.7. Shares are up 13.5% year to date as of the close of trading on Tuesday. Currently there are 11 analysts that rate Costco Wholesale Corporation a buy, 2 analysts rate it a sell, and 7 rate it a hold. TheStreet Ratings rates Costco Wholesale Corporation as a buy. The company's strengths can be seen in multiple areas, such as its revenue growth, impressive record of earnings per share growth, compelling growth in net income, largely solid financial position with reasonable debt levels by most measures and notable return on equity. We feel these strengths outweigh the fact that the company shows weak operating cash flow. Get the full Costco Wholesale Corporation Ratings Report now. Exclusive Offer: Jim Cramer's 'go-to' small/mid-cap guru Bryan Ashenberg only buys stocks he thinks could return 50-100%. See his top picks for 14-days FREE.