There were also new fears about insider trading of a sort that took the banks by surprise. In the twenties, fortunes had been made through whispered tips and sly winks. The public tolerated this because only a tiny percentage of them owned stock. As personal investing grew in the 1950s and early 1960s, the public didn’t wish to take part in a rigged game. It took time for the banks to perceive the danger, or at least the new public apprehension.
