Corning shares up 6%, but H-P checks techs By: MarketWatch November 27, 2012 at 11:03 AM EST Corning rises on raised sales forecast and an analyst upgrade, but blue chip H-P weighs down tech sector. Yelp gains on Cantor Fitzgerald upgrade. Read More >> Related Stocks: Apple Corning Facebook Hewlett-Packard Intel Corp Microsoft Salesforce Yahoo Yelp Inc