MMID vs TMID
MFS Active Mid Cap ETF vs T. Rowe Price Mid-Cap Equity Research ETF
Which is better, MMID or TMID?
TMID costs less.
TMID has a lower expense ratio. TMID is less concentrated, with 9.6% of the fund in its ten largest positions against 16.2%.
MarketXLS is not an investment adviser. This comparison is generated automatically from market data and is for information only. A Best mark means the better reading on that one measure, not a recommendation to buy.
Side-by-Side Comparison
| Metric | MMID | TMID |
|---|---|---|
| Expense Ratio | 0.59% | 0.47%Best |
| AUM | $36M | $12M |
| Dividend Yield | 0.99% | 0.00% |
| Holdings | 106 | 391 |
| YTD Return | +5.51%Best | +0.46% |
| 1Y Return | +6.40% | - |
| Top 10 Weight | 16.2% | 9.6%Best |
| Fund Family | MFS Investment Management | T.Rowe Price |
| Category | Equity | Equity |
| Style | Mid Cap Blend | Mid Cap Blend |
| Inception | Sep 24, 2025 | Sep 16, 2026 |
Not shown on this pair: 3Y Return (annualized), 5Y Return (annualized), Volatility (annualized), Max Drawdown, $10,000 over the window.
MMID vs TMID growth
Month-end closes. Both lines start at 0% in the first month shown, so the gap between them is the difference in growth across that window. The full view is available from the range buttons; it is not the opening view here because over the whole period one of these two funds moves so much further than the other that its line would sit flat on the axis.
MMID vs TMID Performance
MFS Active Mid Cap ETF (MMID) is an ETF from MFS Investment Management and T. Rowe Price Mid-Cap Equity Research ETF (TMID) is an ETF from T.Rowe Price. Year to date, MMID is up 5.51% versus a gain of 0.46% for TMID.
Past performance does not guarantee future results.
Fees and Cost Over Time
MMID charges 0.59% per year while TMID charges 0.47%. On a $10,000 position that is $59 vs $47 annually, a gap of $12 per year that compounds over a long holding period. On income, MMID currently yields 0.99% against 0.00% for TMID.
Holdings Overlap
49.5% of MMID's money is in holdings TMID also owns. 16.4% of TMID's money is in holdings MMID also owns.
The two portfolios partly overlap.
48 positions in common, counted across the 104 positions we hold weights for in MMID and 391 in TMID, against full books of 106 and 391.
What only one of them owns
Our book lists 321 positions for TMID that do not appear in our book for MMID (78.2% of the fund), and 49 for MMID that do not appear in TMID (43.4%).
Some of those will be the same company recorded under a different code in one of the two books, so the real difference in what you would own is no larger than this and may be smaller. We do not name the individual positions here for that reason.
Top Shared Holdings
| Stock | Weight in MMID | Weight in TMID | Difference |
|---|---|---|---|
| WATWaters Corp. | 1.78% | 0.53% | 1.25% |
| LNGCheniere Energy Inc. | 1.70% | 0.59% | 1.11% |
| AAgilent Technologies Inc | 1.69% | 0.56% | 1.13% |
| FANGDiamondback Energy Inc - Common | 1.61% | 0.61% | 1.00% |
| BDXBecton Dickinson And Co. | 1.64% | 0.49% | 1.15% |
| SNOWSnowflake Inc | 1.32% | 0.81% | 0.51% |
| ESIElement Solutions Inc | 1.05% | 1.05% | 0.00% |
| PRPermian Resource | 1.34% | 0.70% | 0.64% |
| HPEHewlett Packard Enterprise Co | 1.36% | 0.46% | 0.90% |
| GWWWw Grainger Inc. | 1.45% | 0.33% | 1.12% |
49.5% of MMID is already inside TMID.
You probably hold more than these two. Add the rest and see how much of the whole book is the same companies twice.
Free for up to 10 holdings. No account needed.
Frequently Asked Questions
Which is cheaper, MMID or TMID?
MMID has an expense ratio of 0.59% while TMID charges 0.47%. TMID is the cheaper option, by $12 a year on a $10,000 investment.
What is the holdings overlap between MMID and TMID?
49.5% of MMID's money is in holdings TMID also owns. 16.4% of TMID's is in holdings MMID also owns. They hold 48 positions in common, counted across the 104 positions we hold weights for in MMID and 391 in TMID.
Which pays a higher dividend, MMID or TMID?
MMID yields 0.99% while TMID yields 0.00%, so MMID currently pays the higher dividend yield.
Is TMID better than MMID?
TMID has a lower expense ratio. TMID is less concentrated, with 9.6% of the fund in its ten largest positions against 16.2%. Which one suits a particular account depends on what it is for. This is information, not a recommendation.