Quote from MR.NBBO:
IBsoft has posted in the past:
"The FX dealers we have connections to often take 3 seconds to execute."
What you see on the screen is what you get. it is completely electronic. We've got three of the largest banks making markets and they honor their quotes. It's possible that you sent an order and they were updating their markets the instant your order was sent.
Quote from mokwit:
Ok I've seen that happen but when I looked at the tick trail left in button trader it was clear in my particular case (maybe not yours) that the quotes had been moved/cancelled in multi pip leaps - basically what bank dealers do in a fast market.
WRT to getting filled at the limit this happens a lot in e.g. HSI and after looking closely at what went down in T&S and Marketdelta in the cases I looked at it was due to me being last in the que with the fill at the limit being caused by the market pulling back.
Quote from def:
We've put a great deal of effort into this product and are confident that product is going to be amongst the best available to the retail and professional trader.