Asset Owner Directory

Massachusetts PRIM

The Pension Reserves Investment Management (PRIM) Board manages the assets of the Pension Reserves Investment Trust (“PRIT”) Fund for public employee pension benefits on behalf of Massachusetts State Employees, Massachusetts Teachers’, and Boston Teachers’, as well as local participating retirement systems throughout the Commonwealth that elect to invest with PRIM. PRIM’s mission is to generate strong risk-adjusted investment returns that help the Commonwealth of Massachusetts meet its pension obligations and alleviate potential taxpayer burden.


United States



Performance (%, 1YR)


Chief Executive

Michael Trotsky

Chief Investment Officer

Michael Trotsky


Deborah B. Goldberg

Asset allocation

21.3% Domestic Equity

11.5% International Equity

4.4% Emerging Markets Equity

0.1% Global Equity Emerging-Diverse Manager Program

14.5% Core Fixed Income

6.8% Value-Added Fixed Income

18.4% Private Equity

10.6% Real Estate

3.2% Timberland

0.1% Liquidating Portfolios

0.6% Overlay

8.6% Portfolio Completion Strategies related articles

MassPRIM’s laser focus on fees

MassPRIM credits a crucial element of its investment success to a laser focus on controlling costs. Costs, alongside risk and return, comprise three philosophical pillars that shape investment and in the fiscal year 2024 cost saving measures include no-fee co-investments in private equity and direct investments in real estate.

MIT consortium builds ESG tools

Research into the data, measurement and methodologies of ESG rating agencies has resulted in the Aggregate Confusion Project, a research project led by academics at MIT to develop a set of ESG tools and methodologies that will become best practice.
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