The launch of Integro has been announced today after the broker raised more than $300m (£155m) through the completion of a private securities placement.
The newly-formed global broker will be headed by Bob Clements as chairman, Roger Egan as chief executive, and Peter Garvey as president.
Integro will service commercial clients globally.
A statement said yesterday that it would open offices in London, Toronto, Bermuda and major US cities in the coming weeks.