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 down today with the Dow Jones Industrial Average ( ^DJI) trading down 3 points (0.0%) at 15,304 as of Thursday, May 23, 2013, 12:50 PM ET. The NYSE advances/declines ratio sits at 979 issues advancing vs. 1,985 declining with 110 unchanged. The Services sector currently sits down 0.07 versus the S&P 500, which is down 0.37. On the negative front, top decliners within the sector include Melco Crown Entertainment ( MPEL), down 4.01, Wynn Resorts ( WYNN), down 2.25, Companhia Brasileira De Distribuicao ( CBD), down 1.70, Las Vegas Sands ( LVS), down 1.77 and Sysco Corporation ( SYY), down 1.53. Top gainers within the sector include rue21 ( RUE), up 22.7%, Lender Processing Services ( LPS), up 12.3%, Liberty Media Corporation ( LMCA), up 12.1%, Lions Gate Entertainment Corporation ( LGF), up 4.6% and United Continental Holdings ( UAL), up 2.4%. TheStreet Ratings group would like to highlight 5 stocks pushing the sector lower today: 5. Sirius XM Radio ( SIRI) is one of the companies pushing the Services sector lower today. As of noon trading, Sirius XM Radio is down $0.04 (-1.0%) to $3.50 on average volume Thus far, 26.7 million shares of Sirius XM Radio exchanged hands as compared to its average daily volume of 46.3 million shares. The stock has ranged in price between $3.43-$3.52 after having opened the day at $3.49 as compared to the previous trading day's close of $3.54. Sirius XM Radio Inc. provides satellite radio services in the United States and Canada. The company broadcasts music, sports, entertainment, comedy, talk, news, traffic, and weather channels on subscription fee basis through two satellite radio systems. Sirius XM Radio has a market cap of $22.4 billion and is part of the media industry. The company has a P/E ratio of 6.4, below the S&P 500 P/E ratio of 17.7. Shares are up 21.6% year to date as of the close of trading on Wednesday. TheStreet Ratings rates Sirius XM Radio as a buy. The company's strengths can be seen in multiple areas, such as its revenue growth, solid stock price performance, notable return on equity, good cash flow from operations and largely solid financial position with reasonable debt levels by most measures. Although the company may harbor some minor weaknesses, we feel they are unlikely to have a significant impact on results. Get the full Sirius XM Radio 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.