ACMG vs JMID
American Century Mid Cap Growth Insights ETF vs Janus Henderson Mid Cap Growth Alpha ETF
Which is better, ACMG or JMID?
ACMG has been ahead.
JMID has a lower expense ratio. ACMG led over 1Y. JMID is less concentrated, with 26.5% of the fund in its ten largest positions against 52.3%.
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 | ACMG | JMID |
|---|---|---|
| Expense Ratio | 0.39% | 0.30%Best |
| AUM | $93M | $19M |
| Dividend Yield | 0.11% | 0.52% |
| Holdings | 35 | 192 |
| YTD Return | -12.25% | -1.56%Best |
| 1Y Return | - | -1.16% |
| Top 10 Weight | 52.3% | 26.5%Best |
| Fund Family | American Century Investments | Janus Henderson Investors |
| Category | Equity | Equity |
| Style | Mid Cap Growth | Mid Cap Growth |
| Inception | Jul 13, 2020 | Sep 17, 2024 |
Not shown on this pair: 3Y Return (annualized), 5Y Return (annualized), Volatility (annualized), Max Drawdown, $10,000 over the window.
ACMG vs JMID 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.
ACMG vs JMID Performance
American Century Mid Cap Growth Insights ETF (ACMG) is an ETF from American Century Investments and Janus Henderson Mid Cap Growth Alpha ETF (JMID) is an ETF from Janus Henderson Investors. Year to date, ACMG is down 12.25% versus a loss of 1.56% for JMID.
Past performance does not guarantee future results.
Fees and Cost Over Time
ACMG charges 0.39% per year while JMID charges 0.30%. On a $10,000 position that is $39 vs $30 annually, a gap of $9 per year that compounds over a long holding period. On income, ACMG currently yields 0.11% against 0.52% for JMID.
Holdings Overlap
37.3% of ACMG's money is in holdings JMID also owns. 15.3% of JMID's money is in holdings ACMG also owns.
The two portfolios partly overlap.
The two holdings books were reported 57 days apart, ACMG as of Sep 3, 2026 and JMID as of Oct 30, 2026, so some of the difference between them is the time between the two reports rather than the funds.
12 positions in common, counted across the 34 positions we hold weights for in ACMG and 94 in JMID, against full books of 35 and 192.
What only one of them owns
Our book lists 78 positions for JMID that do not appear in our book for ACMG (81.2% of the fund), and 19 for ACMG that do not appear in JMID (56.0%).
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 ACMG | Weight in JMID | Difference |
|---|---|---|---|
| NETCloudflare Inc (180 Day Lockup) | 7.80% | 1.59% | 6.21% |
| CMGChipotle Mexican Grill Inc. Class A | 4.58% | 1.55% | 3.03% |
| VSTVistra Energy Corp. | 3.17% | 2.92% | 0.25% |
| MTSIMacom Technology Solutions Holdings, Inc. | 4.78% | 0.24% | 4.54% |
| TRGPTarga Resources Corp Preferred | 4.68% | 0.23% | 4.45% |
| IDXXIdexx Laboratories Inc. | 2.24% | 1.96% | 0.28% |
| DXCMDexcom Inc. | 1.51% | 2.38% | 0.87% |
| RDDTReddit Inc Series C Pc Pp | 2.62% | 0.85% | 1.77% |
| CPAYCorpay Inc | 1.25% | 1.83% | 0.58% |
| AFRMAffirm Inc | 1.10% | 1.55% | 0.45% |
37.3% of ACMG is already inside JMID.
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, ACMG or JMID?
ACMG has an expense ratio of 0.39% while JMID charges 0.30%. JMID is the cheaper option, by $9 a year on a $10,000 investment.
What is the holdings overlap between ACMG and JMID?
37.3% of ACMG's money is in holdings JMID also owns. 15.3% of JMID's is in holdings ACMG also owns. They hold 12 positions in common, counted across the 34 positions we hold weights for in ACMG and 94 in JMID.
Which pays a higher dividend, ACMG or JMID?
ACMG yields 0.11% while JMID yields 0.52%, so JMID currently pays the higher dividend yield.
Is JMID better than ACMG?
JMID has a lower expense ratio. ACMG led over 1Y. JMID is less concentrated, with 26.5% of the fund in its ten largest positions against 52.3%. Which one suits a particular account depends on what it is for. This is information, not a recommendation.