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IWOvsRZGETF Comparison
iShares Russell 2000 Growth ETF (IWO) and Invesco S&P SmallCap 600® Pure Growth ETF (RZG) 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, RZG's top sector exposures are Health Care, Industrials and Information Technology. IWO is less expensive with a Total Expense Ratio (TER) of 0.24%, versus 0.35% for RZG. IWO is up 0.46% year-to-date (YTD) with -$633M in YTD flows. RZG performs better with 4.94% YTD performance, and -$35K in YTD flows. Run a side-by-side ETF comparison of IWO and RZG 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 RZG performance and flow charts
Performance
Cumulative Flows
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IWO RZG | -4.23%-3.65% | -4.03%+1.13% | +0.46%+4.94% | +26.32%+24.23% | +52.50%+54.61% | +5.81%+9.29% |
| Flows | IWO RZG | -$136M-$584K | -$586M-$1M | -$633M-$35K | -$792M-$14M | -$680M-$18M | -$522M-$39M |
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IWO RZG | +21.07%+16.90% | +25.00%+22.31% | +22.15%+20.31% | +24.55%+22.95% |
| Max drawdown | IWO RZG | -9.46%-5.58% | -17.18%-14.71% | -28.47%-25.62% | -40.45%-38.45% |
| Max drawdown duration | IWO RZG | 48d13d | 46d46d | 280d296d | 1409d1521d |
IWO | RZG | |
Last sale 3/12/2026 at 1:30 PM | $316.45 | $55.65 |
| Previous close 03/11/2026 | $324.87 | $57.04 |
| Consolidated volume 03/11/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
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IWO | RZG | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
IWO | RZG | |
|---|---|---|
| Last price | $316.45 | $55.65 |
| 1D performance | -2.59% | -2.44% |
| AuM | $12.70 B | $108.38 M |
| E/R | 0.24% | 0.35% |
Countries
Sectors
Diversification
Total weight of top 15 holdings out of 15
Total weight of top 15 holdings out of 15
Top 15 holdings
How have the IWO and RZG ETFs performed in 2026?
As of March 11, 2026, IWO is up 0.46% year-to-date (YTD), while RZG has returned 4.94%. That puts RZG better performer ahead so far this year.
Which ETF is attracting more investor money: IWO or RZG?
Year-to-date, the IWO ETF saw -$633M in flows, compared to -$35K for RZG.
Which ETF is more volatile: IWO or RZG?
Over the past year, IWO had a volatility of 25%, while RZG experienced 22.31%.
Which ETF is bigger: IWO or RZG?
As of March 11, 2026, IWO holds $12.70 B in assets under management (AUM), while RZG manages $108.38 M.
What sectors do the IWO and RZG ETFs invest in?
IWO leans toward sectors like Health Care, Information Technology and Industrials. Meanwhile, RZG focuses on Health Care, Industrials and Information Technology.
What are the top holdings of the IWO ETF and RZG ETF?
IWO top holdings include BLOOM ENERGY CORP, CREDO TECHNOLOGY GROUP HOLDING and KRATOS DEFENSE AND SECURITY SOLS. RZG holds in its top three: ACM RESEARCH, PTC THERAPEUTI/D and TRANSMEDICS GROUP.
Which ETF is more diversified: IWO or RZG?
IWO holds 1094 securities with 13.7% of its assets in the top 15. RZG has 130 securities and a top 15 weight of 21.07%.
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