Cambridge analytica is propped in a major way by Robert Mercer of Renaissance Technologies. See, https://www.newyorker.com/magazine/2017/03/27/the-reclusive-hed

Cambridge analytica is propped in a major way by Robert Mercer of Renaissance Technologies. See, https://www.newyorker.com/magazine/2017/03/27/the-reclusive-hedge-fund-tycoon-behind-the-trump-presidency https://www.newyorker.com/magazine/2017/03/27/the-reclusive-.... I happen to work near their corporate headquarters in NY, and I can't tell you the number of times I had to fight the urge to get into their network.