BlackBerry shares plunge after failed sale By: MarketWatch November 04, 2013 at 10:59 AM EST Troubled smartphone maker calls off plans for $4.7 billion buyout and replaces CEO Thorsten Heins Read More >> Related Stocks: Amazon.com Apple Facebook Groupon Cl A International Business Machines Microsoft Netflix PHLX Semiconductor Sector Index Pandora Media Inc Twitter, Inc. Yahoo