MMUKX — MFS Utilities Fund
Data updated: 2026-06-29
MMUKX — MFS Utilities Fund. United States Mid Cap Blend / Core Utilities Equity · $2.82B AUM. Holdings, fees, performance and SEC filings.
MMUKX Fund Overview
MMUKX — MFS Utilities Fund is a US mutual fund managed by Mfs Series Trust VI, categorised as United States Mid Cap Blend / Core Utilities 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 VI
- Category: United States Mid Cap Blend / Core Utilities Equity
- Assets under management: $2.82B
- 1-year return: 26.2%
- Ticker: MMUKX
- SEC CIK: 0000863032
- SEC series ID: S000002470
- Share class ID: C000070410
MMUKX Holdings
Top 10 holdings of MFS Utilities Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| NextEra Energy, Inc. | 13.32% |
| Constellation Energy Corp. | 7.00% |
| PG&E Corp. | 5.59% |
| Xcel Energy, Inc. | 5.37% |
| Sempra | 4.88% |
| American Electric Power Co., Inc. | 4.87% |
| DTE Energy Co. | 4.08% |
| Ameren Corp. | 3.83% |
| Dominion Energy, Inc. | 3.79% |
| Southern Co. (The) | 3.69% |
MMUKX Portfolio Allocation
Asset-class allocation of MFS Utilities Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Equity | 99.1% |
| Cash & Equivalents | 0.8% |
MMUKX Performance
Total returns for MMUKX (as of 2026-09-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 12.4% |
| 1 year | 26.2% |
| 3 years (annualised) | 11.6% |
| 5 years (annualised) | 9.2% |
MMUKX Risk Information
Risk metrics for MMUKX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 13.4%
MMUKX Costs and Fees
MMUKX costs about $67 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.67%
- Gross expense ratio: 0.68%
- Portfolio turnover: 14%
- Brokerage commissions: 1.35 bps of average net assets (SEC N-CEN)
MMUKX Cashflows
Over the 12 months to 2026-04, MFS Utilities Fund had net outflows of $128.10M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-04 | −$10.53M |
| 2026-03 | −$3.04M |
| 2026-02 | −$22.39M |
| 2026-01 | −$16.56M |
| 2025-12 | $36.41M |
| 2025-11 | −$15.40M |
MMUKX Debt Constituents
No individual debt constituents are reported in MFS Utilities Fund's latest SEC N-PORT filing.
MMUKX Prospectus and SEC Filings
Official MFS Utilities Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
- Prospectus (485BPOS) — filed 2026-02-26
- Prospectus (485BPOS) — filed 2025-02-27
- Prospectus (485BPOS) — filed 2024-02-27
- Portfolio holdings (N-PORT) — filed 2026-06-29
- Portfolio holdings (N-PORT) — filed 2026-03-25
- Portfolio holdings (N-PORT) — filed 2025-12-23
- Annual census (N-CEN) — filed 2026-01-14
- Annual census (N-CEN) — filed 2025-01-14
Related Funds
Other United States Mid Cap Blend / Core Utilities 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.