I have been looking for a canadian broker too.
I was trading with PFG canada at one point but website not working anymore, but they called me a week or so ago, so they are still in business. Not recommended cause PFG BEST platform
still has too many bugs.
I know a couple of guy who make a living at trading and they ditched IB because of reliability problems. So IB not good enough
for protraders, maybe good enough for me? Not really willing to try.
I found ALTcapitalMARKETS
http://www.altcapitalmarkets.com/
They provide a couple of different platform that have a reputation for reliability but the test drive of the CTS platform is telling things
can be simpler.
Refco canada is a joke, commissions too high and min account too high.
I have demoed NINJATRADER and love it.
Basically, I am looking for a canadian based brokerage who can hook me up with the ninjatrader platform but so far, nobody.
I found a couple more broker but not surre they can give me what I want:
http://www.unionsecuritiescommodityfutures.ca/
http://www.tradefreedom.com/trading/trading_fees.html
oops! trade freedom min $25 000 to open account
That is pretty much it.
If you have additional info, please add it here.