KEY POINTS
  • Shares fell as much as 24 percent, slumping below $170 in extended trading.
  • The company's top executives warned about decelerating revenue, tightening margins and the ongoing effects of privacy policy changes. 
Facebook CEO, Mark Zuckerberg

Facebook shareholders wiped more than $130 billion off the company's market value Wednesday after the company's second-quarter earnings call.

Shares fell as much as 24 percent, slumping below $170 in extended trading. The call and subsequent plunge followed a revenue miss for the company and a report of lower daily active user counts in Europe.