Facebook among gainers as tech stocks rally By: MarketWatch October 28, 2014 at 11:41 AM EDT Investors are upbeat ahead of Facebook’s earnings. Meanwhile, Twitter is slumping on concerns about its user growth, and a number of analysts’ downgrades. Read More >> Related Stocks: Alibaba Group Holding Ltd Apple Facebook Microsoft Netflix PHLX Semiconductor Sector Index Pandora Media Inc Twitter, Inc. Yahoo