 NEWTON, Mass.--BUSINESS WIRE--The RMR Group Inc. Nasdaq: RMR placed among the fastest growing middle market companies in Massachusetts by the Boston Business Journal BBJ in its 2021 Middle Market Leaders ranking. With total revenues of 589.5 million for Fiscal 2020, RMR ranked 29th among middle market companies in Massachusetts. This is the second consecutive year that RMR is appearing on the BBJs Middle Market Leaders list, which ranks publicly traded and private companies with revenue 