I had a FXCM accound (active trader 3000059352) my balance was $76,000. I had one position opened (GBP/USD) 1M Lot size, at price 1.30949. I'm a US resident, so our only leverage is 1:50 . On Oct/6/2016 FXCM closed that position (due to margin requirements) with a loss of $66k due to the Gbp/Usd flash crash. I only had $11k left in my account. When i contacted them many times to make sure of the right margin requirements calculations. They said nothing was wrong and that happened due to some SLIPPAGES. But about $19k or more slippage?? from the magin requirements for that position that supposed to be closed at. That was not fair at all. So that I talked to a lawyer about my case and he is going to make a lawsuit case against FXCM to get my money back.