MMBUX — MassMutual Select T. Rowe Price Small and Mid Cap Blend Fund
Data updated: 2025-08-25
MMBUX — MassMutual Select T. Rowe Price Small and Mid Cap Blend Fund data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. United States Mid Cap Blend / Core Equity · $164.05M AUM · 0.00% expense ratio · 6.2% 1-yr return. From SEC regulatory filings.
MMBUX Fund Overview
MMBUX — MassMutual Select T. Rowe Price Small and Mid Cap Blend Fund is a US mutual fund managed by Massmutual Select Funds, categorised as United States Mid Cap Blend / Core Equity. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Manager: Massmutual Select Funds
- Category: United States Mid Cap Blend / Core Equity
- Assets under management: $164.05M
- 1-year return: 6.2%
- Ticker: MMBUX
- SEC CIK: 0000916053
- SEC series ID: S000061111
- Share class ID: C000198053
MMBUX Holdings
Top 10 holdings of MassMutual Select T. Rowe Price Small and Mid Cap Blend Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| TechnipFMC PLC | 1.09% |
| T. Rowe Price Government Reserve Fund | 1.06% |
| Esab Corp | 1.05% |
| Veeva Systems Inc | 0.86% |
| API Group Corp | 0.84% |
| T. Rowe Price Government Reserve Fund | 0.83% |
| Corpay Inc | 0.83% |
| Expand Energy Corp | 0.82% |
| Lattice Semiconductor Corp | 0.79% |
| Alnylam Pharmaceuticals Inc | 0.79% |
MMBUX Portfolio Allocation
Asset-class allocation of MassMutual Select T. Rowe Price Small and Mid Cap Blend Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Equity | 99.3% |
| Cash & Equivalents | 1.3% |
| Fixed Income | 0.1% |
MMBUX Performance
Total returns for MMBUX (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| 1 year | 6.2% |
| 3 years (annualised) | 10.6% |
| 5 years (annualised) | 10.3% |
MMBUX Risk Information
Risk metrics for MMBUX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 16.2%
MMBUX Costs and Fees
MMBUX costs about $0 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.00%
- Gross expense ratio: 0.06%
- Portfolio turnover: 42%
- Brokerage commissions: 4.24 bps of average net assets (SEC N-CEN)
MMBUX Cashflows
Over the 12 months to 2025-06, MassMutual Select T. Rowe Price Small and Mid Cap Blend Fund had net outflows of $420.29M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2025-06 | −$2.90M |
| 2025-05 | −$12.68M |
| 2025-04 | −$12.07M |
| 2025-03 | −$380.21M |
| 2025-02 | −$6.61M |
| 2025-01 | −$9.28M |
MMBUX Debt Constituents
Largest debt holdings of MassMutual Select T. Rowe Price Small and Mid Cap Blend Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| Wolfspeed, Inc. | 0.05% |
| Wolfspeed, Inc. | 0.01% |
MMBUX Prospectus and SEC Filings
Official MassMutual Select T. Rowe Price Small and Mid Cap Blend Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
Related Funds
Other United States Mid Cap Blend / Core Equity 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.