 PONTIAC, Mich.--BUSINESS WIRE--- UWMC UWMC--UWM Holdings Corporation NYSE:UWMC, the parent of United Wholesale Mortgage UWM, the 1 wholesale and purchase mortgage lender in the U.S., today rang the bell alongside mortgage brokers from across the country at the New York Stock Exchange commemorating National Mortgage Brokers Day. Mat Ishbia, UWM president and CEO rang the bell alongside 13 independent mortgage brokers from across the country with nearly 100 independent mortgage brokers in attendance. M 