AEMG vs MID
Harbor AlphaEdge Mid Cap Growth ETF vs American Century Mid Cap Growth Impact ETF
Which is better, AEMG or MID?
AEMG costs less.
AEMG has a lower expense ratio. AEMG is less concentrated, with 26.7% 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 | AEMG | MID |
|---|---|---|
| Expense Ratio | 0.38%Best | 0.39% |
| AUM | $2M | $104M |
| Dividend Yield | 0.00% | 0.14% |
| Holdings | 252 | 35 |
| Top 10 Weight | 26.7%Best | 52.3% |
| Fund Family | Harbor Funds | American Century Investments |
| Category | Equity | Equity |
| Style | Mid Cap Growth | Mid Cap Growth |
| Inception | Aug 26, 2026 | Jul 15, 2020 |
Not shown on this pair: YTD Return, 1Y Return, 3Y Return (annualized), 5Y Return (annualized), Volatility (annualized), Max Drawdown, $10,000 over the window.
The two price series end 31 days apart, so a return over any period would be measuring two different stretches of market. Those rows are withheld. AEMG has data through Nov 9, 2026 and MID through Oct 9, 2026.
Fees and Cost Over Time
AEMG charges 0.38% per year while MID charges 0.39%. On a $10,000 position that is $38 vs $39 annually, a gap of $1 per year that compounds over a long holding period. On income, AEMG currently yields 0.00% against 0.14% for MID.
Holdings Overlap
10.0% of AEMG's money is in holdings MID also owns. 33.0% of MID's money is in holdings AEMG also owns.
The two portfolios partly overlap.
The two holdings books were reported 58 days apart, AEMG as of Oct 31, 2026 and MID as of Sep 3, 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 125 positions we hold weights for in AEMG and 34 in MID, against full books of 252 and 35.
What only one of them owns
Our book lists 19 positions for MID that do not appear in our book for AEMG (60.2% of the fund), and 105 for AEMG that do not appear in MID (84.8%).
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 AEMG | Weight in MID | Difference |
|---|---|---|---|
| OKTAOkta Inc. | 0.38% | 6.73% | 6.35% |
| CMGChipotle Mexican Grill Inc. Class A | 1.67% | 4.58% | 2.91% |
| MTSIMacom Technology Solutions Holdings, Inc. | 0.40% | 4.78% | 4.38% |
| VSTVistra Energy Corp. | 0.96% | 3.17% | 2.21% |
| NTRANatera Inc | 1.74% | 2.06% | 0.32% |
| DXCMDexcom Inc. | 2.01% | 1.51% | 0.50% |
| ALNYAlnylam Pharmaceuticals Inc. | 0.25% | 3.14% | 2.89% |
| RDDTReddit Inc Series C Pc Pp | 0.48% | 2.62% | 2.14% |
| AXONAxon Enterprise Inc | 0.84% | 1.31% | 0.47% |
| TOSTToast Inc | 0.34% | 1.47% | 1.13% |
33.0% of MID is already inside AEMG.
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, AEMG or MID?
AEMG has an expense ratio of 0.38% while MID charges 0.39%. AEMG is the cheaper option, by $1 a year on a $10,000 investment.
What is the holdings overlap between AEMG and MID?
33.0% of MID's money is in holdings AEMG also owns. 33.0% of MID's is in holdings AEMG also owns. They hold 12 positions in common, counted across the 125 positions we hold weights for in AEMG and 34 in MID.
Which pays a higher dividend, AEMG or MID?
AEMG yields 0.00% while MID yields 0.14%, so MID currently pays the higher dividend yield.
Is MID better than AEMG?
AEMG has a lower expense ratio. AEMG is less concentrated, with 26.7% 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.