Icahn’s latest Dell dealings light up tech action By: MarketWatch March 11, 2013 at 09:55 AM EDT Activist investor to review PC maker’s confidential information. BlackBerry gains on U.S. release date for Z10 smartphone. Read More >> Related Stocks: AT&T Inc Apple Facebook Google, Inc. Hewlett-Packard PHLX Semiconductor Sector Index The Priceline Group Yahoo