Acorn Holdings The A logo image 300 dpicorn Holdings LLC is an investment and development company focused on urban, transit oriented, multi-family housing in the metropolitan Boston marketplace. Our current project pipeline includes many high-profile, strategically located sites. Acorn's current portfolio includes 3 self-managed apartment buildings in Cambridge comprising over 150 leased units. Current development portfolio includes 250 additional units in 4 projects, expected to come on-line in next 3 years. Our senior management team represents over 50 years of combined experience in the financing and development of complex, urban mixed-use projects in high-value, high barrier-to-entry markets.