Why does IB still use "Island"?

T

telience

Island isn't around anymore, anyone understand what IB is doing with all these references to it in their fee schedules and routing column?

Also, I'm trying to get a clear grasp of the exchanges available.

Mostly I see

Nasdaq
NYSE/Arca
NYSE/Floor
Bats

Those are the top four main ones. Tape C (Nasdaq) has the leading volume with Tapes A and B coming in second and third.

That sound right?
 
not sure exactly when but for some discretionary trades they have been shown as executed on ISLAND when I used smart routing from IB
 
Instinet bought Island in 2002 to form INET, and then in 2005 Nasdaq bought INET. After Nasdaq's aquisition, it's my understanding that Nasdaq converted its matching engines to the INET/Island code base, and the same engine is used for their new options exchange.

Don't quote me on this, but I think that of the three "source" code bases (Island, pre-2002 Instinet, and pre-2005 Nasdaq tech such as SuperMontage), the Island code base retains the greatest influence, and this results in many brokerages still "accidentally" referencing Island when discussing certain technical features of order submission/types/matching, etc.
 
Quote from JezLiberty:

not sure exactly when but for some discretionary trades they have been shown as executed on ISLAND when I used smart routing from IB
More...

Friday I had 188 trades shown as Island by SMART routing...
21% of my volume and virtually all ETF executions.
 
You must log in or register to reply here.
Back
Top