Musk said late on Friday he would heed shareholder concerns and no longer pursue a $72 billion deal to take the luxury electric carmaker private, abandoning an idea that stunned investors and drew regulatory scrutiny. "We absolutely must stay focused on ramping Model 3 and becoming profitable," he said Friday. Monday's share value marks a fall of about 20 percent since Aug. 7, when it rallied after Musk announced on Twitter he was considering taking Tesla private for $420 a share, saying funding for the deal was "secured."