ETF Evaluator:
MFS Active Mid Cap ETF ()
Follow This ETF
(as of Aug 26)
Best Performing in Mid-Cap Blend Over the Last Year
| 58.8% | Castellan Targeted Equity ETF (CTEF) |
| 53.8% | Invesco S&P Spin-Off ETF (CSD) |
| 43.0% | Counterpoint Quantitative Equity ETF (CPAI) |
| 40.8% | Optimize Strategy Index ETF (OPTZ) |
| 37.3% | Tema U.S. Manufacturing & Reshoring ETF (WELD) |
Risk
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Risk
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ETF Details
MFS Active Mid Cap ETF Overview
MFS Active Mid Cap ETF (MMID) is an actively managed U.S. Equity Mid-Cap Blend exchange-traded fund (ETF). MFS launched the ETF in 2025.
The investment seeks capital appreciation.
The fund adviser normally invests at least 80% of the fund’s net assets in issuers with medium market capitalizations. The fund adviser generally defines medium market capitalization issuers as issuers with market capitalizations similar to those of issuers included in the Russell Midcap® Index over the last 13 months at the time of purchase.
About MFS Active Mid Cap ETF (MMID)
There are 1 members of the management team with an average tenure of 0.85 years: Kevin Schmitz (2025). Management tenure is more important for actively managed ETFs than passive index ETFs.
MFS Active Mid Cap ETF has 106 securities in its portfolio. The top 10 holdings constitute 15.2% of the ETF’s assets. The ETF meets the SEC requirement of being classified as a diversified fund. The ETF is not considered to have an ESG focus with its investment selection and management.
MFS Active Mid Cap ETF is part of the Equity global asset class and is within the U.S. Equity ETF group. MFS Active Mid Cap ETF has 4.9% of its portfolio invested in foreign issues. The overall assets allocated to domestic stock is 94.4% There is 4.9% allocated to foreign stock, and 0.0% is allocated to preferred stocks. The bond allocation as a percentage of total assets is 0.0% (0.0% domestic bond, 0.0% foreign bond and 0.0% convertible bond). MFS Active Mid Cap ETF has 0.7% of the portfolio in cash.
Assets Under Management
The fund has $35 million in total assets, which is below the $4 billion average for the Mid-Cap Blend category. Normally, lower assets under management translates to higher average expense ratios, and greater total assets are desired. However, for some investment categories, such as small-cap investing, it may be difficult for the manager to fully employ the desired active strategy if assets grow too large or too quickly.
MMID Performance and Fees
The expense ratio measures how much of a fund’s assets are used for administrative expenses and operating expenses, including adviser fees and fees for the transfer agent and custodial services. The MFS Active Mid Cap ETF expense ratio is average compared to funds in the Mid-Cap Blend category. MFS Active Mid Cap ETF has an expense ratio of 0.59%, which is 31% higher than its category average, making the fund expense ratio grade a D. While it is difficult to predict returns, it is known that high annual expense ratios reduce your rate of return, and excessive fees are difficult to overcome. Active management normally comes with higher expense ratios than passive index management. Certain investment categories such as small company and foreign also normally have higher expense ratios. It is best to compare fund expense ratios against the category averages for meaningful assessments.
High portfolio turnover can translate to higher expenses and lower aftertax returns. MFS Active Mid Cap ETF has a portfolio turnover rate of 8%, which indicates that it holds its assets around / 0.1 years. By way of comparison, the average portfolio turnover is 84% for the Mid-Cap Blend category.
Recently, in the month of July 2026, MFS Active Mid Cap ETF returned 1.8%, which earned it a grade of A, as the Mid-Cap Blend category had an average return of -1.6%. The letter grades of A, B, C, D and F are based upon relative rankings within the investment category. A grade of A, for example, would indicate that the return is in the highest 20% for that time period compared to all ETFs in that category.
MFS Active Mid Cap ETF has a trailing yield of 0.00%, which is below the 0.85% category average.
The fund normally distributes its income quarterly and its capital gains annually.
It’s natural to seek the best-performing investments, but you must consider the relationship between risk and return and the impact of costs and taxes on your realized returns.
MFS Active Mid Cap ETF Grades
Year to date, the ETF has returned 8.0%, 6.0 percentage points worse than the category, which translates into a grade of F.
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MMID Trailing NAV Total Returns Data as of 7/31/26
| Last Month |
Last Quarter |
Ann'l. 1Yr |
Ann'l. 3Yr |
Ann'l. 5Yr |
Ann'l. 10Yr |
|
| MMID Return (NAV) | 1.8% | 5.1% | na | na | na | na |
| MMID Return (Price) | 2.4% | 5.3% | na | na | na | na |
| NAV +/- Price Return | -0.603% | -0.145% | na | na | na | na |
| Mid-Cap Blend Avg | -1.6% | 4.4% | 20.8% | 14.8% | 8.8% | 11.6% |
| MMID Grade (NAV) | A | B | na | na | na | na |
| +/- Category (NAV) | 3.4% | 0.8% | na | na | na | na |
| MMID Tax-Cost Ratio | na | na | na | na | na | na |
MMID Annual NAV Total ReturnsData as of 7/31/26
| 2026 | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | |
| MMID Return (NAV) | 8.0% | na | na | na | na | na | na | na | na | na | na |
| MMID Return (Price) | 7.6% | na | na | na | na | na | na | na | na | na | na |
| NAV +/- Price Ret | -0.043% | na | na | na | na | na | na | na | na | na | na |
| Mid-Cap Blend Avg | 14.0% | 10.6% | 16.1% | 16.9% | -14.4% | 23.3% | 15.6% | 27.4% | -9.1% | 19.1% | 14.8% |
| MMID Grade (NAV) | F | na | na | na | na | na | na | na | na | na | na |
| +/- Category | -6.0% | na | na | na | na | na | na | na | na | na | na |
| Risk Measures | |
| Beta: | na |
| R-Squared: | na |
| Standard Deviation: | na |
| Category Risk Index: | na |
| Category Risk Rating: | |
| Total Risk Index: | na |
| Total Risk Rating: | |
| Portfolio Characteristics | |
| Yield: | -- |
| Total Assets: | $ 36 Mil |
| Share Class Assets: | $ 36 Mil |
| Turnover: | 8.0% |
| Expense Ratio: | 0.59% |
| Index Fund: | No |
| Index Tracked: | N/A |
| Index Weighting: | 100% |
| Leveraged: | No |
| Socially Responsible Fund: | No |
| Capital Gains Distribution Frequency: | Annually |
| Income Distribution Frequency: | Quarterly |
Management Team
| Number of Managers: 1 | |||
| Longest Tenure: 0.9 years | |||
| Average Tenure: 0.9 years | |||
| Managers (Year): Schmitz Kevin (2025) | |||
Portfolio Composition (as of 7/30/26)
| # of Holdings: | 106 |
| % in Top 10 Holdings: | 15.2% |
| Fund is Non-Diversified: | No |
| % in Foreign Issues: | 4.9% |
Portfolio Allocation |
|
| Domestic Stock: | 94.4% |
| Foreign Stock: | 4.9% |
| Preferred Stock: | 0.0% |
| Domestic Bond: | 0.0% |
| Foreign Bond: | 0.0% |
| Convertible Bond: | 0.0% |
| Other: | 0.0% |
| Cash: | 0.7% |
Purchase Information
| Legal Structure: | Open Ended Investment Company |
| Fund Family: | MFS |
| Phone Number: | 800-637-5637 |
| Website: | |
| Inception Date: | September 24, 2025 |
Expenses and Fees
| Expense Ratio (%): | 0.59% (Rating: Avg) |
| Category Average Expense Ratio (%): | 0.45% |
