
MFSB seeks total return through an actively managed, broad portfolio of debt securities. The fund invests in US and foreign government securities, municipal instruments, mortgage- and asset-backed securities, and corporate bonds. The portfolio includes debt instruments of any geographic location, maturity, and credit quality, focusing on investment grade debts. To construct the portfolio, the fund employs an active bottom-up approach, selecting investments based on fundamental analysis of individual instruments and issuers. The adviser also considers top-down factors in structuring the fund…
Is MFSB's expense ratio expensive, average, or a steal for its category?
Pro reveals the verdict on a 5-tier spectrum calibrated against ICI 2025 industry averages, with strategy-aware bands so the comparison is meaningful.

The sheer size of the fixed income market makes it a complex space to navigate. In a recent article and accompanying video titled “Pursuing Alpha: Our Active Fixed Income Approach,” an accompanying video explains how MFS Investment Management deftly navigates a complex fixed-income market.

The U.S. Federal Reserve's third and final rate cut of the year may not have caught most of the capital markets off-guard. However, fixed income investors may be wondering how best to position their portfolios with 2026 just around the corner.

Given the murky macroeconomic landscape, navigating the fixed income markets can be a tricky undertaking. MFS Co-CIO of Fixed Income, Pilar Gómez-Bravo, provided valuable insights on the current fixed income environment in an interview: Navigating the Fixed Income Valuation Conundrum.

With the Fed's rate-cutting cycle underway and the new year fast approaching, how should advisors and investors be looking to position their fixed income portfolios? Recently, the MFS team examined the state of play in the global fixed income market in its Q4 2025 Portfolio Perspectives.

Alex Mackey, CFA, co-CIO, fixed income at MFS Investment Management, recently discussed active bond investing at the Q1 2025 Fixed Income Symposium hosted on the VettaFi platform. MFS launched a suite of actively managed ETFs at the end of 2024, three equity ETFs and two bond ETFs.