Nasdaq–the world’s largest electronic stock exchange–closed trading for more than three hours on Thursday.
The stock exchange, home to tech giants like Google, Apple and Facebook, says it experienced a malfunction in “disseminating price quotes.”
According to one estimation, as much as $5.7 trillion dollars in shares was locked up.
Nathaniel Popper, a reporter for our partner The New York Times, explains why the malfunctions occurred and the ways this can be prevented in the future.