Facebook, Yelp spur tech gains; Intel slips By: MarketWatch May 02, 2013 at 11:14 AM EDT Facebook and Yelp march higher on Thursday morning following strong quarterly results. Chip giant Intel slips as it names new CEO. Read More >> Related Stocks: Apple Applied Materials Facebook Google, Inc. Intel Corp PHLX Semiconductor Sector Index Qualcomm, Inc. Seagate Technology Plc Yelp Inc