A federal judge in California has ordered tech billionaire Elon Musk to testify again in the US Securities and Exchange Commission's (SEC) investigation of his $44 billion takeover of Twitter.

What is Jeff Bezos' net worth? The Amazon founder is on the verge of surpassing tech billionaire Elon Musk as the world's wealthiest person.

Elon Musk's brain implant company, Neuralink, has changed the location of its business incorporation from Delaware to Nevada.

Russia's President Vladimir Putin was full of praise for Elon Musk during his two-hour interview with Tucker Carlson aired on Thursday, calling the tech billionaire a "smart person."

Speculation about potential layoffs at Tesla has surfaced following a report that the electric vehicle maker instructed managers to identify critical roles on their team.

Elon Musk's SpaceX is under scrutiny by a California civil rights agency following allegations of unaddressed bias and sexual harassment against female employees.

A drug-related revelation revealed Elon Musk's extremely tight personal and financial links to Tesla board members, lowering the carmaker's shares.

Elon Musk has established a culture of peer pressure among his friends and business associates that forces them to use drugs with him, The Wall Street Journal reported.

Elon Musk's electric car company, Tesla, was sued by a group of 25 California counties over hazardous waste.

A Delaware judge ruled on Tuesday to void Tesla CEO Elon Musk's 2018 compensation package, which is potentially worth up to $55.8 billion.