A thoughtful approach backed by strong execution. MFS US Credit continues to merit Above Average People and Process Pillar ratings underpinned by strong leadership, disciplined execution, and a durable investment process.
MFS Corporate Bond Fund Class B MFBBX
- NAV / 1-Day Return 12.38 / +0.16 %
- Total Assets 4.4B
-
Adj. Expense Ratio
1.510%
- Expense Ratio 1.510%
- Distribution Fee Level Low
- Share Class Type Deferred Load
- Category Corporate Bond
- Credit Quality / Interest Rate Sensitivity Medium/Moderate
- Min. Initial Investment 1,000
- Status Closed
- TTM Yield 3.77%
- Effective Duration 6.60 years
USD | NAV as of Jun 16, 2026 | 1-Day Return as of Jun 16, 2026, 2:34 AM GMT+0
Morningstar’s Analysis MFBBX
Will MFBBX outperform in the future?
Get our overall rating based on a fundamental assessment of the pillars below.
People Pillar
The People Pillar is our evaluation of the MFBBX management team’s experience and ability. We find that high-quality management teams deliver superior performance relative to their benchmarks and/or peers.
Parent Pillar
The Parent Pillar is our rating of MFBBX’s parent organization’s priorities and whether they’re in line with investors’ interests.
- Current Portfolio Date
- Equity Holdings —
- Bond Holdings —
- Other Holdings —
- % Assets in Top 10 Holdings 8.3
|
Top 10 Holdings
|
% Portfolio Weight
|
Market Value USD
|
Sector
|
|---|---|---|---|
US Treasury Bond Future June 26 | 2.66 | 117M | Government |
2 Year Treasury Note Future June 26 | 2.01 | 88M | Government |
Ultra US Treasury Bond Future June 26 | 1.97 | 87M | Government |
Currency Cash CASH_USD | 1.35 | 59M | Cash and Equivalents |
UBS Group AG 3.13% | 0.78 | 34M | Corporate |
JPMorgan Chase & Co. 2.55% | 0.77 | 34M | Corporate |
Boeing Co. 5.81% | 0.76 | 34M | Corporate |
The Charles Schwab Corporation 4.91% | 0.63 | 28M | Corporate |
Bermuda (Government of) 5% | 0.59 | 26M | Government |
Morgan Stanley 5.07% | 0.58 | 26M | Corporate |
United States