Hi Kirk,
I don't trade the FX, but some of my close friends and associated do. So I follow the seen a little.
With regards to Matchbook, from what I've hear they have been checked out by the Fed and the managment has the highest integrity.
The market is usually 3 to 5 pips wide,
during violent market moves it can have gaps like EBS
but for the most part there are always tight spreads
and dealable prices. The average posted bid or offer
is 1 buck but I have seen 3-4 bucks up in slow
markets. They used to publish volume but they
recently upgraded their technology and the new system
does not publish volume numbers. I think they do
around a half a yard a day. I have seen in articles
where they quote that they do between $250 M and $300
M a day. Liquidity isn't really an issue because you
can post your own bid or offer so you have the
advantage of being a price taker or a price maker.
The new system also has a anonomous request for quote
feature that allows every market participant to
respond to a customers request for quote. That
feature helps in violent markets like yesterday. They
are much closer to equity trading systems than anything
else in the market.
Best,
Mike