Quote from gnome:
What happens if all 5 ECNs fill you? You got 25k instead of 15k?
I was reading up a bit on IB's Smart Routing... one report showed about 90% of IB trades used "Smart Routing Limit Orders"... So does that mean the Smart Routing automaticaly picks up the pieces of the trade at various ECNs until the trade is filled?
Yep you just need to pay attention to the levels you are doing it at (i.e. if you are buying a round dollar there tends to be reserves)
DESCRIPTION:
on the stock market they allow people to have hidden orders called reserves so often times at round numbers like 28 even or 28.25 or 28.50 there is a reserve or a hidden order which does not show on the book, but is still there, meaning all 5 will fill.
Realistically though you can probably choose 4 ecns but divide it by 3 and you are better off for example if you want 15 you go 4 to 4 ecns times 5 as opposed to three times 5 you might end up with 20 but more than likely get a better fill, and still be missing a few of the shares you wanted