IWO vs. RBIL
IWO (iShares Russell 2000 Growth ETF) and RBIL (F/m Ultrashort Treasury Inflation-Protected Security (TIPS) ETF) are both exchange-traded funds - IWO is a Small Cap Growth Equities fund tracking the Russell 2000 Growth Index, while RBIL is a Inflation-Protected Bonds fund tracking the Bloomberg US Ultrashort TIPS 1-13 Months Index. Both are passively managed. Over the past year, IWO returned 39.68% vs 4.07% for RBIL. At a correlation of -0.18, they often move in opposite directions. IWO charges 0.24%/yr vs 0.17%/yr for RBIL.
Performance
IWO vs. RBIL - Performance Comparison
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Returns By Period
In the year-to-date period, IWO achieves a 20.20% return, which is significantly higher than RBIL's 2.32% return.
IWO
- 1D
- -1.57%
- 1M
- 4.24%
- YTD
- 20.20%
- 6M
- 16.81%
- 1Y
- 39.68%
- 3Y*
- 19.15%
- 5Y*
- 5.15%
- 10Y*
- 12.01%
RBIL
- 1D
- 0.01%
- 1M
- -0.19%
- YTD
- 2.32%
- 6M
- 2.37%
- 1Y
- 4.07%
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
IWO vs. RBIL - Yearly Performance Comparison
| 2026 (YTD) | 2025 | |
|---|---|---|
IWO iShares Russell 2000 Growth ETF | 20.20% | 15.85% |
RBIL F/m Ultrashort Treasury Inflation-Protected Security (TIPS) ETF | 2.32% | 2.85% |
Correlation
The correlation between IWO and RBIL is -0.20, meaning they tend to move in opposite directions. This is especially valuable for risk management - when one declines, the other has historically tended to hold steady or rise.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | -0.20 |
Correlation (All Time) Calculated using the full available price history since Feb 25, 2025 | -0.18 |
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Return for Risk
IWO vs. RBIL — Risk / Return Rank
IWO
RBIL
IWO vs. RBIL - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares Russell 2000 Growth ETF (IWO) and F/m Ultrashort Treasury Inflation-Protected Security (TIPS) ETF (RBIL). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| IWO | RBIL | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -2.55 | ||
| Sortino ratioReturn per unit of downside risk | -4.24 | ||
| Omega ratioGain probability vs. loss probability | 1.29 | 2.13 | -0.83 |
| Calmar ratioReturn relative to maximum drawdown | 2.68 | 7.82 | -5.14 |
| Martin ratioReturn relative to average drawdown | 9.57 | 42.95 | -33.38 |
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Drawdowns
IWO vs. RBIL - Drawdown Comparison
The maximum IWO drawdown since its inception was -60.11%, which is greater than RBIL's maximum drawdown of -0.52%. Use the drawdown chart below to compare losses from any high point for IWO and RBIL.
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Drawdown Indicators
| IWO | RBIL | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -60.11% | -0.52% | -59.59% |
Max Drawdown (1Y)Largest decline over 1 year | -14.87% | -0.52% | -14.35% |
Max Drawdown (3Y)Largest decline over 3 years | -28.57% | — | — |
Max Drawdown (5Y)Largest decline over 5 years | -40.51% | — | — |
Max Drawdown (10Y)Largest decline over 10 years | -42.02% | — | — |
Current DrawdownCurrent decline from peak | -1.57% | -0.50% | -1.07% |
Average DrawdownAverage peak-to-trough decline | -16.68% | -0.07% | -16.61% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 4.16% | 0.10% | +4.06% |
Volatility
IWO vs. RBIL - Volatility Comparison
iShares Russell 2000 Growth ETF (IWO) has a higher volatility of 7.84% compared to F/m Ultrashort Treasury Inflation-Protected Security (TIPS) ETF (RBIL) at 0.36%. This indicates that IWO's price experiences larger fluctuations and is considered to be riskier than RBIL based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| IWO | RBIL | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 7.84% | 0.36% | +7.48% |
Volatility (6M)Calculated over the trailing 6-month period | 16.69% | 0.85% | +15.84% |
Volatility (1Y)Calculated over the trailing 1-year period | 22.20% | 0.95% | +21.25% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 24.65% | 1.07% | +23.58% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 24.18% | 1.07% | +23.11% |
IWO vs. RBIL - Expense Ratio Comparison
IWO has a 0.24% expense ratio, which is higher than RBIL's 0.17% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.
Dividends
IWO vs. RBIL - Dividend Comparison
IWO's dividend yield for the trailing twelve months is around 0.42%, less than RBIL's 4.38% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
IWO iShares Russell 2000 Growth ETF | 0.42% | 0.56% | 0.80% | 0.73% | 0.73% | 0.32% | 0.44% | 0.71% | 0.76% | 0.73% | 0.97% | 0.89% |
RBIL F/m Ultrashort Treasury Inflation-Protected Security (TIPS) ETF | 4.38% | 3.65% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
Frequently Asked Questions
IWO and RBIL have a correlation of -0.20, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
IWO has higher volatility (7.84%) compared to RBIL (0.36%). In terms of maximum drawdown, IWO dropped -60.11% vs RBIL's -0.52%.
On 1-year performance, IWO leads with 39.68% vs 4.07% for RBIL. On fees, RBIL is cheaper at 0.17% per year. On volatility, RBIL has been the lower-risk option at 0.36%. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 1-year period, IWO has performed better with a 39.68% return vs 4.07%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
RBIL is cheaper with a 0.17% expense ratio, compared with 0.24% for IWO.
RBIL has the higher dividend yield at 4.38%, compared with 0.42% for IWO.
IWO is categorized as Small Cap Growth Equities, while RBIL is Inflation-Protected Bonds. IWO tracks Russell 2000 Growth Index, while RBIL tracks Bloomberg US Ultrashort TIPS 1-13 Months Index. They also come from different issuers: iShares and F/m. Their fees differ too: 0.24% for IWO and 0.17% for RBIL.
RBIL currently has the higher Sharpe Ratio (4.35 vs 1.80), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.
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