Short Seller Andrew Left Lives in Fear of the Feds at His Door

Andrew Left is behind the wheel of a dark gray Range Rover cruising through Beverly Hills with the windows down on a cool morning. Though he’s sworn off smoking, he’s looking to buy a pack of Marlboro Lights.

Two years after FBI agents showed up at his California home to seize computers and phones, the short seller who terrorized more than 100 companies and riled an army of meme-stock traders is describing what it’s like to feel hunted. His pioneering firm, Citron Research, no longer has investors. He’s all but stopped pitching ideas publicly. He even wiped his once-feared Twitter ...