Quote from crgarcia:
Actually they DO profit from churning naive investors accounts.
They receive a chunk of the trading commissions, so they make 750+ trades per day.
Frequent trading is a scam.
Newbies: Follow the money, brokers love to churn accounts.
How are people making 750 trades/day profiting from others trading?
You're so caught up in your conspiracy theories you're not making any sense.
Are there people who shouldn't trade frequently? Yeah. Do brokers like to see those people trade anyway? Yeah. But, you know who else likes it? Day-traders who are profitable.
Think about it logically. If I am a losing day-trader, let's say my typical trade loses me $50. About $10 of that goes to my commission and the other $40 goes where? Into the pockets of successful day-traders in a zero-sum game. Is the broker's $10 a higher risk-adjusted return than the other $40 which goes to the trader taking the opposite side of the trade? Maybe, but it certainly isn't the entirety of the unprofitable trader's loss and, depending on my own risk in making that $40 as a profitable day-trader, my risk-adjusted return may be even better than the broker's.
You're so focused on the broker's role in facilitating the trades between the winning and losing traders that you are losing sight of the fact that as far as dollar amounts are concerned, the broker's piece is the smallest.
The only way your argument could make sense is if the entire loss from losing day-trader's losing trades went to the brokers. Clearly, that's not the case.
You know who has the most incentive to keep losing day-traders in the game? Winning day-traders.

