Quote from NY0BScalper:
The way I see it is as that the daytraders make their living off of the natural inefficiencies that come when large orders are entered, especially fearfully or greedily. The orders come from all the various institutions that are trying to chase after a 25% (or 15%, or 10) annual return on vast sums of money.
A good daytrader can consistently profit on a monthly basis by getting in front of institutional orders and profiting off of natural intraday inefficiency. With a $10,000 deposit he can make several hundred thousand dollar in one year - a return of perhaps 2000%. However, that percentage is meaningless because the daytrader can only take so much size, and the more size he takes the more he becomes crippled and prey for other daytraders and market makers. A daytrader who makes $500,000 in a year is a superstar.
Let's say you have a way to fully and without error program precisely the strategy that a trader uses to make $500,000 per year. Because that trader only can monitor limited information and thus can't trade all the setups, let's assume there is $3,000,000 in that strategy if it's traded by a computer.
The strategy only utilizes $500,000 BP, but just to be cautious you use $1,000,000 with a $100,000 deposit, thus your return will be 3000%.
Someone with $100,000,000 to manage can do better putting his money in the bank than he can with a daytrading system that makes 3% per year.
You can bet your ass whatever $3,000,000 that is left on the table is being fought for by hundreds - perhaps thousands - of daytraders and investment banks, hedgefunds, market makers, market manipulators, and all the other various participants.
For anyone trying to make a living off of fees on asset management, it is not worth it to try to make $3,000,000. They must instead try to make $30,000,000 on $200,000,000 for a hedgefund, or manage $1,000,000,000 for a mutual fund. Because the positions required to achieve such returns are so large, it makes it very difficult to freely get in and out of a position in response to short term market action - something daytraders can do - so as long as thousands of institutions are fighting to make $20,000,000 or $300,000,000 on huge sums of capital, we daytraders can fight for our $150,000 - and if we keep $10,000 up at our firm, we can call it a 1500% return, even though whoever is making 15% on 100,000,000 laughs at Joe Daytrader's huge % return number.
Conclusion: percentage return comparisons of daytraders vs. asset managers are completely useless because of the way the markets work.