Elon Musk loses his trillionaire status

Elon Musk is headed back down to Earth.

The richest person in the world is no longer a trillionaire after Tesla and SpaceX share prices plunged during Tuesday's global stock sell-off. He is now worth $957 billion, according to Bloomberg's Billionaires Index.

Musk became a trillionaire earlier this month, moments after SpaceX's historic initial public offering valued the rocket company at more than $2 trillion. The stock rallied for days, with retail investors eager to get in on the company's sci-fi-like promises.

But this week, SpaceX's stock has plummeted. Shares closed around $156 on Tuesday, down more than 30% from an intraday peak of $225 on June 16, though still more than the $150 at which shares began trading on June 12.