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 47 points (0.3%) at 15,382 as of Tuesday, May 21, 2013, 12:50 PM ET. The NYSE advances/declines ratio sits at 1,570 issues advancing vs. 1,367 declining with 136 unchanged. The Technology sector currently sits up 0.2% versus the S&P 500, which is up 0.2%. On the negative front, top decliners within the sector include America Movil S.A.B. de C.V ( AMOV), down 2.03, Intuit ( INTU), down 1.89, China Telecom ( CHA), down 1.62, America Movil S.A.B. de C.V ( AMX), down 1.40 and Nippon Telegraph & Telephone ( NTT), down 1.30. Top gainers within the sector include Konami Corporation ( KNM), up 9.6%, Rogers Communications ( RCI), up 3.0%, Activision Blizzard ( ATVI), up 2.9%, Kyocera Corporation ( KYO), up 2.8% and STMicroelectronics ( STM), up 2.6%. TheStreet Ratings group would like to highlight 5 stocks pushing the sector lower today: 5. NetApp ( NTAP) is one of the companies pushing the Technology sector lower today. As of noon trading, NetApp is down $0.90 (-2.4%) to $36.28 on heavy volume Thus far, 9.0 million shares of NetApp exchanged hands as compared to its average daily volume of 7.3 million shares. The stock has ranged in price between $36.22-$37.17 after having opened the day at $37.15 as compared to the previous trading day's close of $37.19. NetApp, Inc. engages in design, manufacture, marketing, and technical support of networked storage solutions. The company supply enterprise storage and data management software, and hardware products and services. NetApp has a market cap of $13.6 billion and is part of the computer hardware industry. The company has a P/E ratio of 27.4, above the S&P 500 P/E ratio of 17.7. Shares are up 12.8% year to date as of the close of trading on Monday. TheStreet Ratings rates NetApp as a buy. The company's strengths can be seen in multiple areas, such as its increase in net income, revenue growth, good cash flow from operations, expanding profit margins and growth in earnings per share. We feel these strengths outweigh the fact that the company has had somewhat disappointing return on equity. Get the full NetApp 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.