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. VOO led over 1Y. ACSG is less concentrated, with 8.5% of the fund in its ten largest positions against 37.9%.
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 | $52M | $1.0T |
| Dividend Yield | 0.00% | 1.06% |
| Holdings | 311 | 506 |
| YTD Return | +8.14% | +13.57%Best |
| 1Y Return | +10.51% | +17.55%Best |
| 3Y Return (annualized) | - | +22.46% |
| 5Y Return (annualized) | - | +13.28% |
| Volatility (annualized) | 19.1% | 13.2%Best |
| Top 10 Weight | 8.5%Best | 37.9% |
| 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: 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 +10.51% while VOO returned +17.55%. Year to date, ACSG is up 8.14% versus a gain of 13.57% for VOO.
Past performance does not guarantee future results.
Risk: Volatility and Drawdowns
ACSG has been the more volatile fund, with annualized monthly volatility of 19.1% compared with 13.2% for VOO. Lower volatility generally means a smoother ride, though it often comes with lower long-run returns.
The two funds' monthly returns correlate at 0.79. They usually move together, but the gap leaves some room for diversification.
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 1.06% for VOO.
Holdings Overlap
We hold position weights for 309 holdings in ACSG and 504 in VOO, totalling 100.0% and 100.1% of the two funds. The two books name no position in common, so there is no overlap percentage to show.
0 positions in common, counted across the 309 positions we hold weights for in ACSG and 504 in VOO, against full books of 311 and 506.
What only one of them owns
Our book lists 499 positions for VOO that do not appear in our book for ACSG (99.7% of the fund), and 287 for ACSG that do not appear in VOO (94.2%).
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.
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 +10.51% vs +17.55% for VOO, so VOO leads on 1-year performance. Past performance does not guarantee future results. This is information, not a recommendation.
Which is riskier, ACSG or VOO?
ACSG has been the more volatile fund at 19.1% annualized versus 13.2% for VOO.
Should I hold both ACSG and VOO?
ACSG and VOO have a monthly-return correlation of 0.79, so their returns are far enough apart for the mix to behave differently from either one alone. This is information, not a recommendation.
Which pays a higher dividend, ACSG or VOO?
ACSG yields 0.00% while VOO yields 1.06%, so VOO currently pays the higher dividend yield.
Is VOO better than ACSG?
VOO has a lower expense ratio. VOO led over 1Y. ACSG is less concentrated, with 8.5% of the fund in its ten largest positions against 37.9%. Which one suits a particular account depends on what it is for. This is information, not a recommendation.