Quote from Rearden Metal:
Asking for a 50% cut is very unrealistic, since the trader puts up all the money and takes all the risk. Seasoned hedge fund managers with lengthy proven track records only take a 2 and 20 cut (and their investors don't have to manually enter every single trade for themselves). Do you really think anyone sane would pay you more than double that amount?
10% would be a more reasonable cut, and you'd be very lucky to get that, since your system is 100% unproven and you haven't provided any way for the trader to check your credibility. They'd all assume you're probably curve-fitting a system that just works on paper- without even understanding what "curve-fitting" means... which is almost always the case in situations like yours.
I don't have much respect for hedge fund managers, do you? As for my cut, here's my calculation: I will take half of AFTER TAX net profits. So, for example, if you start with $100, and make $200 using my system, pay $70 in taxes (35% top rate), you are left with $130 net profit, of which I take half and you keep $65. If you can find another investment where you can make a 65% annual AFTER TAX gain, go for it.
If it works, it works. Call it by any name.