It had nothing to do with retail traders being dumb: the CEO was interviewed and he didn't explain that the clearing houses needed more deposit. He could have p

It had nothing to do with retail traders being dumb: the CEO was interviewed and he didn't explain that the clearing houses needed more deposit. He could have published all the inner working details so that retail investors can review them, but he didn't do it. Robinhood should either fullfill the abstraction, or be clear about when and how the abstraction breaks down.