All in a day: Zuckerberg loses $29 billion, Bezos set to pocket $20 billion

Facebook Chairman and CEO Mark Zuckerberg testifies at a House Financial Services Committee hearing in Washington, U.S., October 23, 2019. REUTERS/Erin Scott

(Reuters) -Mark Zuckerberg lost $29 billion in net worth on Thursday as Meta Platforms Inc's stock marked a record one-day plunge, while fellow billionaire Jeff Bezos was set to add $20 billion to his personal valuation after Amazon's blockbuster earnings.

Meta's stock fell 26%, erasing more than $200 billion in the biggest ever single-day market value wipeout for a U.S. company. That pulled down founder and Chief Executive Officer Zuckerberg's net worth to $85 billion, according to Forbes.