Facebook shares tumbled by as much as 2.9% in midday trading Wednesday as investors digested a Wall Street Journal report that described what could be a connection between chief executive Mark Zuckerberg and questionable privacy practices.

The social network has uncovered emails that appear to show Zuckerberg was aware of "potentially problematic privacy practices" at Facebook, the WSJ reported, citing people familiar with the matter.

https://markets.businessinsider.com/news/stocks/facebook-stock-price-reaction-to-zuckerberg-reportedly-aware-privacy-issues-2019-6-1028274446