Does E*Trade and other brokerages need to hold all of the stock that are owned by the accounts on their platform?

I've heard that banks only need to hold 10% cash related to the sum of all their accounts, does the same hold true for brokerages?

I'm curious if E*Trade attempts to manage the funds it has rather than just sit in the stocks it's customers own.

Submitted January 10, 2018 at 01:38PM by KinKaid666 http://ift.tt/2mhn7Y9