When optionsellers blew up, the clients not only lost 100% of their invested money but owe money to the broker as well. In other words, clients lost more than 100% of their money. The risk is unlimited.
The question is how can you lose more than your entire investment?SMA-Separately Managed Accounts-Each account was in the name of the client. That is the way most CTAs do business. The disclosure on every CTA doc says you can lose your entire investment.
In the simplest and extreme example :The question is how can you lose more than your entire investment?
Thanks. My mistake was I thought Optionsellers was a hedge fund and investors invested in a hedge fund should not lose more than what they put in. Didn't understand they were a CTA trading their client's account.In the simplest and extreme example :
You buy at 10 putting up 3 and borrowing 7= liq net is 3
Your 10 investment drops to 1. Now your liq net is 1 - 7=-6
Thanks. My mistake was I thought Optionsellers was a hedge fund and investors invested in a hedge fund should not lose more than what they put in. Didn't understand they were a CTA trading their client's account.
Yet he traded options. I guess in the right hands, weapons of mass destruction are very effective weapons.

Futures are leveraged products and they were short options. The Margin requirement for those positions does not represent the most you can lose, just what the exchange requires. In addition to what the CME requires, INTL FC Stone has additional risk requirements of a shock of +/-10% and a vol shock of 20 points. The moves must have exceeded that or the manager ignored risk calls. In fact the buy-ins from risk could have helped exacerbate the losses.The question is how can you lose more than your entire investment?