Amazon leads tech retreat; Google, Zynga rally By: MarketWatch January 31, 2014 at 11:03 AM EST Tech stocks were mostly in the red, as shares of Amazon fell after posting disappointing results, but Google and Zynga rally. Read More >> Related Stocks: Amazon.com Apple Google, Inc. Hewlett-Packard Oracle Corp PHLX Semiconductor Sector Index Standard & Poors 500 Zynga Inc Cl A