Order Flow. Investor A buys stock for $11 a share. The system sells that stock to Investor B for $12 a share. Robinhood gets 5c for the trade. The maker gets 95c for the trade. Brokers should be prevented from paying interest on accounts and they could charge .001% monthly fee on total account value ($10 on $1 million).
I can handle 75% down in a day. Assuming it is not a major event. In fact I would be happier for a 75% down day than a 50% up day. More scared of Bernie Sander, Biden, or Warren than a 75% down day.
