Activist short seller Andrew Left convicted of securities fraud for trades tied to Nvidia, Tesla and more

Activist short seller Andrew Left (founder of Citron Research) was convicted by a federal jury in Los Angeles on one securities-fraud scheme count and 12 securities-fraud counts for using his public profile to manipulate stock prices. Prosecutors say Left earned roughly $20 million by promoting bullish or bearish views to move prices and then quickly closing positions; convictions involved trades tied to Nvidia, Tesla, Cronos Group and American Airlines. Left plans to appeal and faces sentencing on Aug. 31, with the lead charge carrying up to 25 years. The case could chill public market commentary and influence sentiment around stocks frequently targeted by high-profile short sellers, and may draw greater regulatory and enforcement scrutiny of trading-linked research.