There are many companies that do brand identity development.

Here are some of the ones that I've collected in my favorites list:

Unboundary -
Crosby Associates -
DeSola Group -
Landor -
Eisenman -
INC Design -
Addison -
Liquid Agency -

Are there any famous or well known brand identity companies, with a track record, that aren't listed here. If they specialize in finance branding all the better for this project. And even better still if they are in NY or Chicago.