IWOvsACSGETF Comparison
American Century Small Cap Growth Insights ETF
iShares Russell 2000 Growth ETF (IWO) and American Century Small Cap Growth Insights ETF (ACSG) belong to the same industry segment: US Small Cap Growth. IWO's top 3 sector exposures are Health Care, Information Technology and Industrials. In contrast, ACSG's top sector exposures are Industrials, Information Technology and Health Care. IWO is less expensive with a Total Expense Ratio (TER) of 0.24%, versus 0.49% for ACSG. IWO is up 10.61% year-to-date (YTD) with -$809M in YTD flows. ACSG performs worse with 9.26% YTD performance, and +$7M in YTD flows. Run a side-by-side ETF comparison of IWO and ACSG below, and assess how they stack up in performance, liquidity, risk, exposure, holdings, and more, helping you select the best ETF for your investments.
IWO vs ACSG performance and flow charts
Performance
Cumulative Flows
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IWO ACSG | +16.32%+11.56% | +3.32%+3.73% | +10.61%+9.26% | +41.72%n/a | +64.12%n/a | +17.90%n/a |
| Flows | IWO ACSG | -$129M+$1M | -$530M+$7M | -$809M+$7M | -$1.22B- | -$1.05B- | -$576M- |
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IWO ACSG | +25.63%+25.30% | +21.38%n/a | +22.42%n/a | +24.55%n/a |
| Max drawdown | IWO ACSG | -12.94%-11.90% | -14.82%n/a | -28.47%n/a | -40.45%n/a |
| Max drawdown duration | IWO ACSG | 76d77d | 84dn/a | 280dn/a | 1409dn/a |
IWO | ACSG | |
Last sale 4/28/2026 at 7:28 PM | $350.94 | |
| Previous close 04/27/2026 | $357.83 | |
| Consolidated volume 04/27/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
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IWO | ACSG | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
IWO | ACSG | |
|---|---|---|
| Last price | $350.94 | – |
| 1D performance | -1.93% | – |
| AuM | $13.78 B | $14.50 M |
| E/R | 0.24% | 0.49% |
IWO | ACSG | |
|---|---|---|
| Management strategy | Passive | Active |
| Provider | iShares | American Century Investments |
| Benchmark | Russell 2000 Growth Index | - |
| N° of holdings | 897 | 208 |
| Asset class | Equities | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | July 24, 2000 | October 14, 2025 |
| ESG | No | No |
Countries
Sectors
Diversification
Total weight of top 15 holdings out of 15
Total weight of top 15 holdings out of 15
