Quote from DarthSidious:
Interactive Brokers accepted mine. Granted, it wasn't exactly 15,000, but still...
Don't be so sure of things of which you have no personal knowledge. My "entity" is an Illinois Limited Partnership with a S-Corp as the General Partner. All regular folks, including me are Limited Partners. Being cheap, I set everything up myself. And, yes, I am confident the setup as as good as it would have been done by a professional.
But I did not do this for "protection". It's a very long shot that you would blow your account and end up with a negative balance. Not unless your broker is a bucket shop and does risk management on the back of an envelope while providing clients $400 day trading margin. If I get caught in a sticky situation, IB will liquidate my positions long before that negative balance happens. Guaranteed. Even the $4.5k maintenance margin of ES is good for a drop of 90 points. How many scenarios can you come up with where ES would drop 90 points and your broker would have no opportunity to react? Sure, there is always a remote possibility, but no one can make a living on that slim odds, methinks.
I should note that I do not know about the equities side of the business. I do futures only. Also, The entity setup thingie hasn't really paid off that much for me (financially). I did this to be able to pool funds from friends & family and be able to give them a K-1 end of the year. That worked out okay.