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.
The stock came back a bit in premarket trading Thursday, off by 17 percent.
The company's top executives delivered a few scary warnings: