Mark zuckerberg net worth: Each net worth figure is

Each net worth figure is updated every business day after the close of trading in New York. Stakes in publicly traded companies are valued using the share's most recent closing price. The month’s biggest loser was Mark Zuckerberg , whose fortune fell by an estimated $29 billion, to $223 billion, as his social media giant Meta missed analysts’ earnings expectations for the third quarter and the company’s shares slumped by 12%. According to Forbes, Zuckerberg 's estimated net worth stood at US$251 billion as of October 2025, making him the third-richest person in the world. [3] He has used his funds to organize multiple large donations, including the establishment of the Chan Zuckerberg Initiative. Meta co-founder Mark Zuckerberg ’s net worth reached the $200 billion mark Thursday, marking the first time the Forbes billionaire list has four billionaires worth $200 billion or more.