AEMC vs SPY
Harbor AlphaEdge Mid Cap Core ETF vs State Street SPDR S&P 500 ETF Trust
Which is better, AEMC or SPY?
Mid Cap Blend against Large Cap Blend.
SPY has a lower expense ratio. AEMC is less concentrated, with 27.7% of the fund in its ten largest positions against 37.8%.
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 | AEMC | SPY |
|---|---|---|
| Expense Ratio | 0.35% | 0.09%Best |
| AUM | - | $804.7B |
| Dividend Yield | 0.00% | 0.98% |
| Holdings | 99 | 505 |
| YTD Return | -2.17% | +11.97%Best |
| 1Y Return | - | +16.40% |
| 3Y Return (annualized) | - | +21.10% |
| 5Y Return (annualized) | - | +12.88% |
| Top 10 Weight | 27.7%Best | 37.8% |
| Fund Family | Harbor Funds | State Street Investment Management |
| Category | Equity | Equity |
| Style | Mid Cap Blend | Large Cap Blend |
| Inception | Aug 26, 2026 | Jan 22, 1993 |
Not shown on this pair: Volatility (annualized), Max Drawdown, $10,000 over the window.
AEMC vs SPY 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.
AEMC vs SPY Performance
Harbor AlphaEdge Mid Cap Core ETF (AEMC) is an ETF from Harbor Funds and State Street SPDR S&P 500 ETF Trust (SPY) is an ETF from State Street Investment Management. Year to date, AEMC is down 2.17% versus a gain of 11.97% for SPY.
Past performance does not guarantee future results.
Fees and Cost Over Time
AEMC charges 0.35% per year while SPY charges 0.09%. On a $10,000 position that is $35 vs $9 annually, a gap of $26 per year that compounds over a long holding period. On income, AEMC currently yields 0.00% against 0.98% for SPY.
Holdings Overlap
58.7% of AEMC's money is in holdings SPY also owns. 2.5% of SPY's money is in holdings AEMC also owns.
The two portfolios partly overlap.
45 positions in common, counted across the 99 positions we hold weights for in AEMC and 504 in SPY, against full books of 99 and 505.
What only one of them owns
Our book lists 453 positions for SPY that do not appear in our book for AEMC (96.9% of the fund), and 51 for AEMC that do not appear in SPY (38.8%).
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 AEMC | Weight in SPY | Difference |
|---|---|---|---|
| MPCMarathon Petroleum Corp | 4.02% | 0.17% | 3.85% |
| AMPAmeriprise Financial Inc | 3.29% | 0.07% | 3.22% |
| FIXComfort Systems USA Inc. | 2.83% | 0.08% | 2.75% |
| NTAPNetapp Inc | 2.81% | 0.06% | 2.75% |
| STTState Street Corp. | 2.73% | 0.08% | 2.65% |
| IEXI D E X Corporation | 2.70% | 0.03% | 2.67% |
| SNASnap-On Inc. | 2.62% | 0.03% | 2.59% |
| AMEAmetek Inc | 2.01% | 0.08% | 1.93% |
| NWSANews Corp A | 2.06% | 0.02% | 2.04% |
| TGTTarget Corp Common Stock Usd.0833 | 1.92% | 0.11% | 1.81% |
58.7% of AEMC is already inside SPY.
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, AEMC or SPY?
AEMC has an expense ratio of 0.35% while SPY charges 0.09%. SPY is the cheaper option, by $26 a year on a $10,000 investment.
What is the holdings overlap between AEMC and SPY?
58.7% of AEMC's money is in holdings SPY also owns. 2.5% of SPY's is in holdings AEMC also owns. They hold 45 positions in common, counted across the 99 positions we hold weights for in AEMC and 504 in SPY.
Which pays a higher dividend, AEMC or SPY?
AEMC yields 0.00% while SPY yields 0.98%, so SPY currently pays the higher dividend yield.
Is SPY better than AEMC?
SPY has a lower expense ratio. AEMC is less concentrated, with 27.7% of the fund in its ten largest positions against 37.8%. Which one suits a particular account depends on what it is for. This is information, not a recommendation.