Tesla CEO Elon Musk served for months as a top advisor to President Donald Trump before the two billionaires fell out.

Elon Musk took to the campaign trail Thursday in Pennsylvania, urging hundreds of people at a rally he held outside of Philadelphia to push their friends and family to register to vote and to cast ...

A representative of the Securities and Exchange Commission served Elon Musk earlier this month with a copy of a complaint about the purchase of Twitter stock.