 NEWTON, Mass.--BUSINESS WIRE--Office Properties Income Trust Nasdaq: OPI today was named one of 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 678.4 million for 2019, OPI ranked third on the list. The BBJs Middle Market Leaders list ranks publicly traded and private companies with revenues of between 25 million and 1 billion by two-year revenue growth. This is the second 