Senior lawmakers have "agreed that Mark Zuckerberg should come to clarify issues related to the use of personal data in a meeting with representatives of the European Parliament", the Parliament's leader Antonio Tajani said in a statement. The company's stock had a trading volume of 9,196,512 shares, compared to its average volume of 31,975,293.
The anonymised data of approximately 3 million Facebook users has reportedly been published on a poorly protected website.
And that members of the public won't be able to form their own opinions about how Facebook's founder responds to pressing questions about what Zuckerberg's platform is doing to their privacy and their fundamental rights.
Facebook CEO Mark Zuckerberg has agreed to appear before the EU Parliament in a move that has upset British MPs.
"I will not attend the meeting with Mr Zuckerberg if it's held behind closed doors".
The EU Justice Commissioner also wants a public hearing.
There seems to be no end to the Cambridge Analytica controversy for Facebook.
In a statement, Facebook said that it welcomed the chance to meet MEPs and "appreciate the opportunity for dialogue, to listen to their views and show the steps we are taking to better protect people's privacy".
Mr Zuckerberg is also confirmed to visit French President Emmanuel Macron in Paris on May 23, along with other tech leaders, according to the French presidency.
"Our citizens deserve a full and detailed explanation".
That's even though Facebook has admitted that of the 2.7 million European users who could be affected by the Cambridge Analytica scandal, over one million of them could be in the UK.
Boss of Cambridge Analytica Alexander Nix has accepted a summons from the Department of Digital, Culture, Media and Sport (DCMS), and will appear in front of its committee on Wednesday 6 June.
Zuckerberg has so far declined to appear, to the British lawmakers' annoyance. Ime Archibong, Vice president of product partnership at Facebook said, "We suspended the myPersonality app nearly a month ago because we believe that it may have violated Facebook's policies, We are now investigating the app, and if myPersonality refuses to cooperate or fails our audit, we will ban it".