Musk returned to federal court to defend himself against a class-action lawsuit that alleges he misled Tesla shareholders with a tweet about an aborted buyout that the billionaire defiantly insisted Tuesday he could have pulled off, had he wanted.

Musk returned to federal court to defend himself against a class-action lawsuit that alleges he misled Tesla shareholders with a tweet about an aborted buyout that the billionaire defiantly insisted Tuesday he could have pulled off, had he wanted.

SAN FRANCISCO (AP) — An Elon Musk tweet declaring he had the financing to take Tesla private in 2018 caused billions of dollars in investor damages after the deal collapsed, according to estimates presented Tuesday at a trial examining the haphazard handling of the buyout proposal.

The mind-bending estimates laid out by two experts hired by attorneys representing Tesla shareholders underscored the challenges facing a nine-person jury as the three-week trial winds down this week.

Another expert, University of Maryland finance professor Steven Heston, reviewed an even denser report analyzing the impact of Musk’s tweets on more than 2,000 types of Tesla stock options, drawing largely upon a formula known as the Black-Scholes model widely used by companies to value executive compensation packages.

Musk abruptly posted the tweet minutes before boarding his private jet after being alerted that the Financial Times was about to publish a story that Saudi Arabia’s Public Investment Fund had spent about $2 billion buying a 5% stake in Tesla to diversify its interests beyond oil, according to his testimony.