Icahn renews call to defeat Dell buyout offer as vote looms Wed Jul 17, 2013 11:52am EDT (Reuters) - Billionaire activist Carl Icahn renewed his call for Dell Inc stockholders to vote against a buyout offer from Michael Dell, amid reports that the company founder might not win enough support for his bid. Dell shareholders are scheduled to vote Thursday on a plan laid out by Michael Dell and private equity firm Silver Lake to take the No. 3 PC maker private in a $24.4 billion deal. However, Dell may decide to delay the vote to gain time to win support for the deal, a person familiar with the matter said on Tuesday. In an open letter to shareholders on Wednesday, Icahn said Dell's special committee must allow a final vote to be completed on July 18, and not try to postpone the vote to a later date. Icahn and Southeastern Asset Management oppose the offer, arguing that a $13.65 share offer "substantially" undervalues the company. Michael Dell and Silver Lake would not raise their offer even if a vote on their offer were delayed, two people familiar with the matter said on Tuesday. Dell shares were down 1.4 percent at $12.83. Reporting By Nicola Leske; Editing by Gerald E. McCormick