---
title: Mark Zuckerberg Lost $16.8 Billion Overnight as Facebook Stock Plunged
description: Mark Zuckerberg's fortune tumbled by $16.8 billion in late trading Wednesday, as Facebook stock slid 20%.
authors:
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    url: https://money.com/author/bloomberg/
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published: '2018-07-26T14:04:17.000Z'
modified: '2018-07-26T14:04:17.000Z'
section: Business
tags:
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word_count: 133
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![Facebook CEO Mark Zuckerberg Testifies At Joint Senate Commerce/Judiciary Hearing](https://img.money.com/2018/07/gettyimages-944400620.jpg)
*WASHINGTON, DC - APRIL 10: Facebook co-founder, Chairman and CEO Mark Zuckerberg testifies before a combined Senate Judiciary and Commerce committee hearing in the Hart Senate Office Building on Capitol Hill April 10, 2018 in Washington, DC. Zuckerberg, 33, was called to testify after it was reported that 87 million Facebook users had their personal information harvested by Cambridge Analytica, a British political consulting firm linked to the Trump campaign. (Photo by Chip Somodevilla/Getty Images)*

Mark Zuckerberg is counting the cost of user disenchantment with Facebook Inc.

His fortune tumbled by $16.8 billion in late trading Wednesday, as shares of the social media giant slid 20 percent at 5:37 p.m. in New York on disappointing results. If that holds through Thursday’s close, he will slide to sixth place from third on the Bloomberg Billionaires Index. It would also wipe his $13.7 billion of gains for the year, leaving him with just less than $70 billion.

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Second-quarter revenue and average daily visitors fell short of analysts’ estimates, according to a statement from the Menlo Park, California-based company. Revenue increased 42 percent to $13.2 billion, missing the $13.3 billion Wall Street consensus. The company is grappling with new data laws in Europe, criticism over its content policies and privacy issues.

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