https://www.theregister.co.uk/2018/04/05/facebook_cant_count_says_cambridge_analytica/

Cambridge Analytica has refuted Facebook’s claim that it had access to 87 million records from The Social Network™.

“Today Facebook reported that information for up to 87 million people may have been improperly obtained by research company GSR,” reads a In a Cambridge Analytica statement. “ambridge Analytica licensed data for no more than 30 million people from GSR, as is clearly stated in our contract with the research company. We did not receive more data than this.”