ADV Ratings has published its latest ranking of the world's biggest wealth management firms or top companies in global private banking. The U.S. dominates the list of top 20 wealth managers with 14 financial institutions. Two firms each are headquartered in Germany and Switzerland, and one each in France and the U.K. See the gallery for the top 20 wealth managers, according to ADV Ratings, ranked by assets under management. The ranking uses balance sheets as of Sept. 30, 2021, unless otherwise noted.