Editor's Note: Any reference to TheStreet Ratings and its underlying recommendation does not reflect the opinion of TheStreet, Inc. or any of its contributors including Jim Cramer or Stephanie Link. All three major indices are trading up today with the Dow Jones Industrial Average ( ^DJI) trading up 11 points (0.1%) at 16,218 as of Tuesday, Feb. 25, 2014, 11:55 AM ET. The NYSE advances/declines ratio sits at 1,600 issues advancing vs. 1,298 declining with 186 unchanged. The Technology sector currently is unchanged today versus the S&P 500, which is up 0.2%. On the negative front, top decliners within the sector include ASML ( ASML), down 2.7%, American Tower ( AMT), down 2.4%, China Telecom ( CHA), down 2.2%, Micron Technology ( MU), down 1.9% and America Movil S.A.B. de C.V ( AMOV), down 1.8%. Top gainers within the sector include Frontier Communications Corp Class B ( FTR), up 8.1%, Amazon.com ( AMZN), up 2.1%, LM Ericsson Telephone Company ( ERIC), up 1.0%, Sap ( SAP), up 0.8% and Emerson Electric ( EMR), up 0.7%. TheStreet would like to highlight 3 stocks pushing the sector lower today: 3. SINA Corporation ( SINA) is one of the companies pushing the Technology sector lower today. As of noon trading, SINA Corporation is down $6.66 (-8.8%) to $69.42 on heavy volume. Thus far, 5.8 million shares of SINA Corporation exchanged hands as compared to its average daily volume of 2.6 million shares. The stock has ranged in price between $68.14-$72.79 after having opened the day at $72.50 as compared to the previous trading day's close of $76.08. SINA Corporation, through its subsidiaries, operates as an online media company in the People's Republic of China. SINA Corporation has a market cap of $4.9 billion and is part of the internet industry. Shares are down 9.7% year-to-date as of the close of trading on Monday. Currently there are 7 analysts that rate SINA Corporation a buy, 1 analyst rates it a sell, and 2 rate it a hold. TheStreet Ratings rates SINA Corporation as a hold. The company's strengths can be seen in multiple areas, such as its robust revenue growth, largely solid financial position with reasonable debt levels by most measures and growth in earnings per share. However, as a counter to these strengths, we find that the company's return on equity has been disappointing. Get the full SINA Corporation Ratings Report now. STOCKS TO BUY: TheStreet Quant Ratings has identified a handful of stocks that can potentially TRIPLE in the next 12 months. Learn more.