On Thursday, Mark Zuckerberg's net worth plummeted by $29 billion as Meta Platforms Inc's (FB.O) stock hit a new low, while fellow billionaire Jeff Bezos was expected to increase his personal wealth by $20 billion following Amazon's record results.

Meta's stock dropped 26%, wiping out more than nearly $200 billion in the worst single-day market value wipeout in US history. According to Forbes, this lowered Facebook's founder and CEO Mark Zuckerberg's net worth to $85 billion.

About 12.8 percent of the digital juggernaut formerly known as Facebook is owned by Zuckerberg.

According to Refinitiv statistics, Bezos, the founder and chairman of the e-commerce store Amazon, owns around 9.9% of the firm. According to Forbes, he is also the world's third-richest man.

Amazon's holiday-quarter profit soared thanks to its investments in Rivian, an electric vehicle company, and the company announced it would raise annual Prime subscription prices in the United States, sending its stock up 15% in extended trading and putting it on track for its biggest percentage gain since October 2009 on Friday.

According to Forbes, Bezos' net wealth increased by 57% to $177 billion in 2021 from a year earlier, owing to Amazon's growth during the epidemic, when people were heavily reliant on internet purchasing.

Following the $29 billion loss, Zuckerberg is ranked twelfth on Forbes' list of real-time billionaires, behind Mukesh Ambani and Gautam Adani of India.

To be sure, trading in technology companies is still choppy as investors try to factor in the effects of rising inflation and an upcoming interest rate hike. With the harm to Zuckerberg's fortune remaining on paper, Meta shares might rebound sooner rather than later.

Last year, before the tech crash of 2021, Zuckerberg sold $4.47 billion worth of Meta shares. The stock transactions were part of a pre-determined 10b5-1 trading strategy, which executives employ to alleviate insider trading concerns.