Business

Having built a stake in Twitter, then being offered and rejecting a seat on its board, Elon Musk proposed taking the company private with a $43bn bid. In response Twitter adopted a poison pill that in effect discourages anyone from accumulating more than 15% of its shares (Mr Musk holds 9.2%). Many wonder if all this is just more mischief-making by Mr Musk, who has clashed with Twitter over free speech, though he is trying to get other backers on board.