Nekoliko mjeseci prije listopada 1929. J.D.Rockefeller, Bernard Barac i ostali "insajderi" polako napuštaju burzu. a 24. listopada 1929., svi oni newyorški bankari koji su izdavali "marginalne zajamove"
So, a few months before October of 1929, J.D. Rockefeller, Bernhard Barack, and other insiders quietly exited the market, and on October 24th, 1929, the New York financiers who furnished the margin loans started calling them in, in mass.