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 Two out of the three major indices are trading up today with the Dow Jones Industrial Average ( ^DJI) trading up 4 points (0.0%) at 14,823 as of Tuesday, April 30, 2013, 12:55 PM ET. The NYSE advances/declines ratio sits at 1,672 issues advancing vs. 1,218 declining with 158 unchanged. The Services sector currently sits up 0.3% versus the S&P 500, which is unchanged. On the negative front, top decliners within the sector include Qiagen ( QGEN), down 4.11, Jacobs Engineering Group ( JEC), down 2.25, DISH Network ( DISH), down 1.92, J.B. Hunt Transport Services ( JBHT), down 1.81 and Charter Communications ( CHTR), down 1.46. Top gainers within the sector include Texas Roadhouse ( TXRH), up 12.5%, Wesco Aircraft Holdings ( WAIR), up 11.8%, Best Buy ( BBY), up 8.1%, Macquarie Infrastructure Company ( MIC), up 6.4% and Sirius XM Radio ( SIRI), up 3.9%. TheStreet Ratings group would like to highlight 5 stocks pushing the sector lower today: 5. Dollar Tree Stores ( DLTR) is one of the companies pushing the Services sector lower today. As of noon trading, Dollar Tree Stores is down $0.70 (-1.5%) to $47.09 on average volume Thus far, 1.3 million shares of Dollar Tree Stores exchanged hands as compared to its average daily volume of 3.0 million shares. The stock has ranged in price between $46.88-$47.73 after having opened the day at $47.65 as compared to the previous trading day's close of $47.79. Dollar Tree, Inc. operates discount variety stores in the United States and Canada. Its stores offer merchandise at the fixed price of $1.00. Dollar Tree Stores has a market cap of $10.9 billion and is part of the retail industry. The company has a P/E ratio of 18.1, above the S&P 500 P/E ratio of 17.7. Shares are up 19.8% year to date as of the close of trading on Monday. TheStreet Ratings rates Dollar Tree Stores 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, notable return on equity and largely solid financial position with reasonable debt levels by most measures. We feel these strengths outweigh the fact that the company has had lackluster performance in the stock itself. Get the full Dollar Tree Stores 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.