### Comment:
Because you can still go bankrupt dingus. You could make money, but you're also quite likely to go bankrupt - you've still got to put in enough collateral to qualify for margin trading, so you can't have literally zero net worth.

### REPLY:
I’m a graduate student. I have 4K to my name. 
  
 Assuming it still works, there is literally no reason I shouldn’t do this.

### END.