The world's richest man's latest political activities prompted a brutal sell-off of Tesla stock as investors question his focus on the company.

Investor Leo KoGuan said he bought 1 million shares of Nvidia, adding that he doesn't see AI as a bubble.

CEO Elon Musk is fabulously wealthy, we can assume that Tesla is a global electric vehicle (EV) juggernaut — right? Not so fast, as Musk’s moneymaker isn’t in first, second, or even third place among ...

Lawsuit claims Musk violated federal securities laws by making false, public statements that "were carefully calculated to drive down the price of Twitter stock." ...