Open this photo in gallery: The percentage of advisors operating in the RIA channel in the U.S. has soared to more than 27 per cent from 18 per cent in the past decade.Jacob Wackerhausen/iStockPhoto / Getty Images Please log in to bookmark this story.Log InCreate Free Account The rapid growth of the registered investment advisor (RIA) channel in the U.S., both in assets under management and head count, has been one of the biggest trends in the wealth management industry south of the border...