MSTDX — MassMutual Short-Duration Bond Fund
Data updated: 2026-08-27
MSTDX — MassMutual Short-Duration Bond Fund. Intermediate Corporate Bond · $125.93M AUM · 0.56% expense ratio. Holdings, fees, performance and SEC filings.
MSTDX Fund Overview
MSTDX — MassMutual Short-Duration Bond Fund is a US mutual fund managed by Massmutual Premier Funds, categorised as Intermediate Corporate Bond. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Manager: Massmutual Premier Funds
- Category: Intermediate Corporate Bond
- Assets under management: $125.93M
- 1-year return: 3.8%
- Ticker: MSTDX
- SEC CIK: 0000927972
- SEC series ID: S000003785
- Share class ID: C000010516
MSTDX Holdings
Top 10 holdings of MassMutual Short-Duration Bond Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Fixed Income Clearing Corp. | 2.16% |
| EIDP Inc | 2.13% |
| Hubbell Inc | 1.58% |
| Bankers Healthcare Group Securitization Trust | 1.19% |
| Enterprise Fleet Financing LLC | 1.03% |
| Elmwood CLO I Ltd. | 0.99% |
| Westlake Automobile Receivables Trust | 0.95% |
| 522 Funding CLO LTD | 0.90% |
| Avis Budget Rental Car Funding AESOP LLC | 0.80% |
| Sba Tower Trust | 0.80% |
MSTDX Portfolio Allocation
Asset-class allocation of MassMutual Short-Duration Bond Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 51.5% |
| Securitized | 42.1% |
| Cash & Equivalents | 6.4% |
MSTDX Performance
Total returns for MSTDX (as of 2026-09-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 1.1% |
| 1 year | 3.8% |
| 3 years (annualised) | 6.5% |
| 5 years (annualised) | 2.2% |
MSTDX Risk Information
Risk metrics for MSTDX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 1.2%
MSTDX Costs and Fees
MSTDX costs about $56 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.56%
- Gross expense ratio: 0.68%
- Portfolio turnover: 47%
- Brokerage commissions: 1.46 bps of average net assets (SEC N-CEN)
MSTDX Cashflows
Over the 12 months to 2026-06, MassMutual Short-Duration Bond Fund had net outflows of $19.49M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-06 | −$4.71M |
| 2026-05 | $3.56M |
| 2026-04 | $768.93K |
| 2026-03 | $3.10M |
| 2026-02 | −$1.39M |
| 2026-01 | −$84.58K |
MSTDX Debt Constituents
Largest debt holdings of MassMutual Short-Duration Bond Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| Sba Tower Trust | 0.80% |
| Cox Communications, Inc. | 0.78% |
| Blue Owl Technology Fina | 0.70% |
| Golub Capital Bdc | 0.68% |
| Enstar Group Ltd. | 0.65% |
| Woori Bank | 0.64% |
| Santos Finance Ltd. | 0.61% |
| Bgc Group, Inc. | 0.61% |
| Piedmont Operating Partn | 0.57% |
| American National Gf | 0.56% |
MSTDX Prospectus and SEC Filings
Official MassMutual Short-Duration Bond Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
- Prospectus (485BPOS) — filed 2026-01-30
- Prospectus (485BPOS) — filed 2025-01-31
- Prospectus (485BPOS) — filed 2024-02-01
- Portfolio holdings (N-PORT) — filed 2026-08-27
- Portfolio holdings (N-PORT) — filed 2026-05-27
- Portfolio holdings (N-PORT) — filed 2026-02-26
- Annual census (N-CEN) — filed 2025-12-12
- Annual census (N-CEN) — filed 2024-12-13
Related Funds
Other Intermediate Corporate Bond funds tracked on ABC INVEST:
Data Sources
ABC INVEST compiles this page from public filings made to the U.S. Securities and Exchange Commission (SEC) through EDGAR: portfolio holdings and monthly cashflows from Form N-PORT, expenses and returns from fund prospectuses (Form 485BPOS) and the SEC DERA Risk/Return Summary data sets, annual data from Form N-CEN, and shareholder reports from Form N-CSR.