ACSG vs VOO
American Century Small Cap Growth Insights ETF vs Vanguard S&P 500 ETF
Which is better, ACSG or VOO?
Small Cap Growth against Large Cap Blend.
VOO has a lower expense ratio. ACSG led over 1Y. ACSG is less concentrated, with 8.5% of the fund in its ten largest positions against 36.4%.
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 | ACSG | VOO |
|---|---|---|
| Expense Ratio | 0.49% | 0.03%Best |
| AUM | $51M | $997.4B |
| Dividend Yield | 0.00% | 1.04% |
| Holdings | 303 | 509 |
| YTD Return | +15.09%Best | +12.50% |
| 1Y Return | +17.61%Best | +17.58% |
| 3Y Return (annualized) | - | +21.27% |
| 5Y Return (annualized) | - | +12.95% |
| Top 10 Weight | 8.5%Best | 36.4% |
| Fund Family | American Century ETFs | Vanguard (US) |
| Category | Equity | Equity |
| Style | Small Cap Growth | Large Cap Blend |
| Inception | Oct 14, 2025 | Sep 7, 2010 |
Not shown on this pair: Volatility (annualized), Max Drawdown, $10,000 over the window.
ACSG vs VOO 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.
ACSG vs VOO Performance
American Century Small Cap Growth Insights ETF (ACSG) is an ETF from American Century ETFs and Vanguard S&P 500 ETF (VOO) is an ETF from Vanguard (US). Over the past year ACSG returned +17.61% while VOO returned +17.58%. Year to date, ACSG is up 15.09% versus a gain of 12.50% for VOO.
Past performance does not guarantee future results.
Fees and Cost Over Time
ACSG charges 0.49% per year while VOO charges 0.03%. On a $10,000 position that is $49 vs $3 annually, a gap of $46 per year that compounds over a long holding period. On income, ACSG currently yields 0.00% against 1.04% for VOO.
Holdings Overlap
0.2% of ACSG's money is in holdings VOO also owns.
We cannot see either book well enough to say how much of this pair is duplicated.
The two holdings books were reported 49 days apart, ACSG as of Aug 18, 2026 and VOO as of Jun 30, 2026, so some of the difference between them is the time between the two reports rather than the funds.
1 positions in common, counted across the 291 positions we hold weights for in ACSG and 505 in VOO, against full books of 303 and 509.
What only one of them owns
Our book lists 495 positions for VOO that do not appear in our book for ACSG (99.4% of the fund), and 264 for ACSG that do not appear in VOO (91.8%).
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 ACSG | Weight in VOO | Difference |
|---|---|---|---|
| FDSFactset Research Systems Inc. | 0.16% | 0.01% | 0.15% |
You are not choosing between two funds in isolation.
Whichever of ACSG and VOO you pick has to sit alongside everything else you own. Add the rest and see what the combination actually holds.
Free for up to 10 holdings. No account needed.
Frequently Asked Questions
Which is cheaper, ACSG or VOO?
ACSG has an expense ratio of 0.49% while VOO charges 0.03%. VOO is the cheaper option, by $46 a year on a $10,000 investment.
Which performed better, ACSG or VOO?
Over the past year ACSG returned +17.61% vs +17.58% for VOO, so ACSG leads on 1-year performance. Past performance does not guarantee future results. This is information, not a recommendation.
Which pays a higher dividend, ACSG or VOO?
ACSG yields 0.00% while VOO yields 1.04%, so VOO currently pays the higher dividend yield.
Is VOO better than ACSG?
VOO has a lower expense ratio. ACSG led over 1Y. ACSG is less concentrated, with 8.5% of the fund in its ten largest positions against 36.4%. Which one suits a particular account depends on what it is for. This is information, not a recommendation.