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Advisor Information for MDBZX

Fund Inception12/03/2010
Name of IssuerMassMutual
Fund Advisor(s)MML Investment Advisers, LLC
Sub-Advisor(s)Barings LLC

Fund Managers for MDBZX

Stephen Ehrenberg
Portfolio Manager since 11/01/2017
Stephen Ehrenberg is a Portfolio Manager for Barings’ Investment Grade Fixed Income Group. Steve has worked in the industry since 2002, and his experience has encompassed portfolio management and credit analysis for both investment grade and high yield corporate credit. Prior to joining the firm in 2004, he worked in capital markets at MassMutual as part of the firm’s executive development program. Steve holds a B.S. in Mechanical Engineering from the United States Military Academy at West Point (Phi Beta Kappa), an M.B.A. from the University of Michigan Business School (High Distinction) and is a member of the CFA Institute. Prior to attending business school, Steve served as a Captain in the U.S. Army, where he held numerous leadership positions and graduated from both Airborne and Ranger School.
Charles Sanford
Portfolio Manager since 12/31/2020
Charles Sanford is a Managing Director and the Head of, and a portfolio manager for, Barings’ Investment Grade Fixed Income Group. Mr. Sanford is also responsible for the portfolio management of Barings’ multi-asset insurance client mandates as well as the investment grade corporate bond strategies. Mr. Sanford has worked in the industry since 1994. Prior to joining Barings in 2004, Mr. Sanford was employed at Booz, Allen and Hamilton as a management consultant and Bell South where he worked on mergers and acquisitions and internal consulting projects.
Rishi Kapur
Portfolio Manager since 02/01/2025
He is a Managing Director and portfolio manager for Barings’ Private Placements and Asset-Based Finance Group. Mr. Kapur shares primary responsibility for the day-to-day management of the MML Inflation-Protected and Income Fund, the MML Managed Bond Fund, and the MML Short-Duration Bond Fund. Mr. Kapur is also the Head of Barings’ Securitized Trading for Global Public Securitized Products and is responsible for trading and developing portfolio strategy across ABS and CMBS sectors. He has worked in the industry since 1997. Prior to joining Barings in 2001, Mr. Kapur was an Audit Consultant at MassMutual’s Corporate Auditing Department and was associated with Conning and Company as an Equity Analyst.
Sean Feeley
Portfolio Manager since 02/01/2026
Sean Feeley is a portfolio manager for Barings’ U.S. High Yield Investment Group. He is also a member of the firm’s U.S. High Yield Investment Committee and the Global High Yield Allocation Committee. Sean is responsible for the portfolio management of various high yield bond total return strategies. Sean has worked in the industry since 1996 and his experience has encompassed the credit market across a variety of industries. Prior to joining the firm in 2003, he worked at Cigna Investment Management in project finance and at Credit Suisse, where he worked in the leveraged finance group. Sean holds a B.S. in Accounting from Canisius College (magna cum laude) and an M.B.A. from Cornell University. He is a Certified Public Accountant (inactive) and member of the CFA Institute.