Twitter goes after billionaire hedge fund executive Ken Griffin in attempt to force Elon Musk to close deal

Like many hedge funds, Ken Griffin’s Citadel has owned both Tesla and Twitter stock. Photo: Christopher Dilts/Bloomberg

Jef Feeley

Ken Griffin, the billionaire founder of hedge fund Citadel, was added to a sweeping list of those Twitter has subpoenaed in its effort to force Elon Musk to complete his $44bn (€43bn) purchase of the social media company.