MUSBX — MFS Blended Research Core Equity Fund
Data updated: 2026-08-24
MUSBX — MFS Blended Research Core Equity Fund. United States Large Cap Blend / Core Equity · $1.41B AUM. Holdings, fees, performance and SEC filings.
MUSBX Fund Overview
MUSBX — MFS Blended Research Core Equity Fund is a US mutual fund managed by Mfs Series Trust XI, categorised as United States Large 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: Mfs Series Trust XI
- Category: United States Large Cap Blend / Core Equity
- Assets under management: $1.41B
- 1-year return: 19.6%
- Ticker: MUSBX
- SEC CIK: 0000911637
- SEC series ID: S000002500
- Share class ID: C000006790
MUSBX Holdings
Top 10 holdings of MFS Blended Research Core Equity Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| NVIDIA Corp | 8.77% |
| Apple Inc | 7.85% |
| Microsoft Corp | 4.16% |
| Amazon.com Inc | 3.98% |
| Alphabet Inc | 2.59% |
| Broadcom Inc | 2.55% |
| Lam Research Corp | 2.43% |
| Johnson & Johnson | 2.31% |
| Alphabet Inc | 2.12% |
| Micron Technology Inc | 2.10% |
MUSBX Portfolio Allocation
Asset-class allocation of MFS Blended Research Core Equity Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Equity | 99.9% |
MUSBX Performance
Total returns for MUSBX (as of 2026-09-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 9.9% |
| 1 year | 19.6% |
| 3 years (annualised) | 19.4% |
| 5 years (annualised) | 12.6% |
MUSBX Risk Information
Risk metrics for MUSBX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 11.6%
MUSBX Costs and Fees
MUSBX costs about $140 per $10,000 invested per year in fund expenses.
- Net expense ratio: 1.40%
- Gross expense ratio: 1.41%
- Portfolio turnover: 47%
- Brokerage commissions: 0.77 bps of average net assets (SEC N-CEN)
MUSBX Cashflows
Over the 12 months to 2026-06, MFS Blended Research Core Equity Fund had net outflows of $320.11M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-06 | −$53.41M |
| 2026-05 | −$347.71M |
| 2026-04 | −$2.92M |
| 2026-03 | −$2.64M |
| 2026-02 | $13.64M |
| 2026-01 | −$20.91M |
MUSBX Debt Constituents
No individual debt constituents are reported in MFS Blended Research Core Equity Fund's latest SEC N-PORT filing.
MUSBX Prospectus and SEC Filings
Official MFS Blended Research Core Equity Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
- Prospectus (485BPOS) — filed 2026-01-27
- Prospectus (485BPOS) — filed 2025-01-27
- Prospectus supplement (497) — filed 2025-09-25
- Portfolio holdings (N-PORT) — filed 2026-08-24
- Portfolio holdings (N-PORT) — filed 2026-05-26
- Portfolio holdings (N-PORT) — filed 2026-02-24
- Annual census (N-CEN) — filed 2025-12-12
- Annual census (N-CEN) — filed 2024-12-12
Related Funds
Other United States Large 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.