Gain Capital rejected my EURUSD market order today post -FOMC. I don't trade forex through Interactive Brokers, however, my understanding is that IAB is acting as a broker, not a dealer. Can IAB also reject a forex market order? More detail: BTW, I understand that Gain and forex dealers in general are crap ethically. I want to make sure that what they've done is within their rights and I'd like to know if a forex broker, such as IAB, plays the same tricks. On the back of today's FOMC announcement my automated trading system submitted a market order to Gain Capital for the EURUSD pair. The order was rejected. I ended up getting filled manually a bit later w/no slippage so there was no loss but I'm really pissed. I called Gain to see why they rejected the order and their response was that the market was "too volatile". I understand that forex dealers have a bad rep but I didn't realize that they can just walk away and refuse to fill a MARKET order. I guess that's what "best efforts" means in the customer agreement. Thx in advance for your help, Lou P.S. BTW, Gain has done this to me 2x in the past 3 weeks.