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 46 points (-0.4%) at 12,524 as of Thursday, Nov. 15, 2012, 12:05 PM ET. The NYSE advances/declines ratio sits at 826 issues advancing vs. 2,151 declining with 91 unchanged. The Computer Software & Services industry currently sits down 0.2% versus the S&P 500, which is down 0.5%. On the negative front, top decliners within the industry include Velti ( VELT), down 32.4%, F5 Networks ( FFIV), down 1.9%, Red Hat ( RHT), down 1.0%, Wipro ( WIT), down 1.1% and Sap AG ADR ( SAP), down 0.8%. Top gainers within the industry include Catamaran ( CTRX), up 1.2%, Cognizant Technology Solutions Corporation ( CTSH), up 0.8% and Automatic Data Processing ( ADP), up 0.3%. TheStreet Ratings group would like to highlight 5 stocks pushing the industry lower today: 5. Nielsen Holdings ( NLSN) is one of the companies pushing the Computer Software & Services industry lower today. As of noon trading, Nielsen Holdings is down $0.39 (-1.4%) to $27.78 on light volume Thus far, 207,818 shares of Nielsen Holdings exchanged hands as compared to its average daily volume of 1.1 million shares. The stock has ranged in price between $27.77-$28.37 after having opened the day at $28.17 as compared to the previous trading day's close of $28.17. Nielsen Holdings N.V., through its subsidiary, The Nielsen Company B.V., operates as an information and measurement company worldwide. Nielsen Holdings has a market cap of $10.4 billion and is part of the technology sector. The company has a P/E ratio of 31.1, above the S&P 500 P/E ratio of 17.7. Shares are down 3.7% year to date as of the close of trading on Wednesday. Currently there are 9 analysts that rate Nielsen Holdings a buy, no analysts rate it a sell, and 5 rate it a hold. TheStreet Ratings rates Nielsen Holdings as a sell. Among the areas we feel are negative, one of the most important has been the stock's relatively poor performance when compared with the S&P 500 during the past year. Get the full Nielsen Holdings Ratings Report now.