Twitter owner Elon Musk. Source: Insider/Getty Images Elon Musk said on Thursday that he's found a new CEO for Twitter. The billionaire did not specify who would be taking over. Musk initially became Twitter CEO or "Chief Twit" last year after he bought the company and fired its former CEO, Parag Agrawal, within hours of taking the social media company private. "Excited to announce that I've hired a new CEO for X/Twitter," Musk said on Twitter. "She will be starting in ~6 weeks! My role will transition to being exec chair & CTO, overseeing product, software & sysops." Musk did not respond to a request for comment from Insider ahead of publication. Twitter responded to a request for comment with an automated message that did not address the issue. Tesla's stock was up 2% following the announcement. Since Musk took over as Twitter CEO in November, some Tesla shareholders have expressed concern over his focus on the social media company ...