Massachusetts Bay Transportation Authority Retirement Fund

Massachusetts Bay Transportation Authority Retirement Fund is a single-employer contributory defined-benefit public pension fund based in Boston, Massachusetts. Established in 1948, the mission of the pension fund is to provide retirement benefits to the employees of the Massachusetts Bay Transportation Authority. It is dedicated to maintaining a diversified investment program to secure the pensions earned by active and retired members and their beneficiaries. The assets are managed by the board of trustees.