IBIE vs. RBIL
IBIE (iShares iBonds Oct 2028 Term TIPS ETF) and RBIL (F/m Ultrashort Treasury Inflation-Protected Security (TIPS) ETF) are both Inflation-Protected Bonds funds - IBIE tracks the ICE 2028 Maturity US Inflation-Linked Treasury Index while RBIL tracks the Bloomberg US Ultrashort TIPS 1-13 Months Index. Both are passively managed. Over the past year, IBIE returned 3.03% vs 3.94% for RBIL. Their 0.36 correlation means their historical movements had little consistent relationship. IBIE charges 0.10%/yr vs 0.17%/yr for RBIL.
Performance
IBIE vs. RBIL - Performance Comparison
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Returns By Period
In the year-to-date period, IBIE achieves a 1.90% return, which is significantly lower than RBIL's 2.70% return.
IBIE
- 1D
- -0.02%
- 1M
- 0.29%
- 6M
- 1.31%
- YTD
- 1.90%
- 1Y
- 3.03%
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
- ALL TIME*
- 5.32%
RBIL
- 1D
- -0.02%
- 1M
- 0.26%
- 6M
- 2.32%
- YTD
- 2.70%
- 1Y
- 3.94%
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
- ALL TIME*
- 3.91%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $698.05K | $699.21K | $764.03K | |
| $1.12M | $1.89M | $2.34M |
IBIE vs. RBIL - Yearly Performance Comparison
| 2026 (YTD) | 2025 | |
|---|---|---|
IBIE iShares iBonds Oct 2028 Term TIPS ETF | 1.90% | 4.73% |
RBIL F/m Ultrashort Treasury Inflation-Protected Security (TIPS) ETF | 2.70% | 2.85% |
Correlation
The correlation between IBIE and RBIL is 0.43, which is low. Their historical price movements had little consistent relationship.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.43 |
Correlation (All Time) Calculated using the full available price history since Feb 25, 2025 | 0.36 |
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Return for Risk
IBIE vs. RBIL — Risk / Return Rank
IBIE
RBIL
IBIE vs. RBIL - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares iBonds Oct 2028 Term TIPS ETF (IBIE) 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.
| IBIE | RBIL | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -1.94 | ||
| Sortino ratioReturn per unit of downside risk | -2.65 | ||
| Omega ratioGain probability vs. loss probability | 1.49 | 2.09 | -0.60 |
| Calmar ratioReturn relative to maximum drawdown | 4.90 | 7.24 | -2.34 |
| Martin ratioReturn relative to average drawdown | 15.03 | 29.66 | -14.63 |
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Drawdowns
IBIE vs. RBIL - Drawdown Comparison
The maximum IBIE drawdown since its inception was -1.70%, which is greater than RBIL's maximum drawdown of -0.56%. Use the drawdown chart below to compare losses from any high point for IBIE and RBIL.
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Drawdown Indicators
| IBIE | RBIL | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -1.70% | -0.56% | -1.14% |
Max Drawdown (1Y)Largest decline over 1 year | -0.72% | -0.56% | -0.16% |
Current DrawdownCurrent decline from peak | -0.20% | -0.13% | -0.07% |
Average DrawdownAverage peak-to-trough decline | -0.38% | -0.08% | -0.30% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.23% | 0.14% | +0.09% |
Volatility
IBIE vs. RBIL - Volatility Comparison
iShares iBonds Oct 2028 Term TIPS ETF (IBIE) and F/m Ultrashort Treasury Inflation-Protected Security (TIPS) ETF (RBIL) have volatilities of 0.30% and 0.31%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| IBIE | RBIL | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.30% | 0.31% | -0.01% |
Volatility (6M)Calculated over the trailing 6-month period | 1.07% | 0.89% | +0.18% |
Volatility (1Y)Calculated over the trailing 1-year period | 1.54% | 0.97% | +0.57% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 2.80% | 1.06% | +1.74% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 2.80% | 1.06% | +1.74% |
IBIE vs. RBIL - Expense Ratio Comparison
IBIE has a 0.10% expense ratio, which is lower than RBIL's 0.17% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.
Dividends
IBIE vs. RBIL - Dividend Comparison
IBIE's dividend yield for the trailing twelve months is around 4.96%, more than RBIL's 4.16% yield.
| Position | TTM | 2025 | 2024 | 2023 |
|---|---|---|---|---|
IBIE iShares iBonds Oct 2028 Term TIPS ETF | 4.96% | 4.09% | 4.23% | 0.75% |
RBIL F/m Ultrashort Treasury Inflation-Protected Security (TIPS) ETF | 4.16% | 3.65% | 0.00% | 0.00% |
Frequently Asked Questions
IBIE and RBIL have a correlation of 0.43, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
RBIL has higher volatility (0.31%) compared to IBIE (0.30%). In terms of maximum drawdown, IBIE dropped -1.70% vs RBIL's -0.56%.
On 1-year performance, RBIL leads with 3.94% vs 3.03% for IBIE. On fees, IBIE is cheaper at 0.10% per year. Their volatility is very similar. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 1-year period, RBIL has performed better with a 3.94% return vs 3.03%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
IBIE is cheaper with a 0.10% expense ratio, compared with 0.17% for RBIL.
IBIE has the higher dividend yield at 4.96%, compared with 4.16% for RBIL.
IBIE tracks ICE 2028 Maturity US Inflation-Linked Treasury 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: 0.10% for IBIE and 0.17% for RBIL.
RBIL currently has the higher Sharpe Ratio (4.23 vs 2.29), 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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