IBID vs. RBIL

Last updated Jun 24, 2026

IBID (iShares iBonds Oct 2027 Term TIPS ETF) and RBIL (F/m Ultrashort Treasury Inflation-Protected Security (TIPS) ETF) are both Inflation-Protected Bonds funds - IBID tracks the ICE 2027 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, IBID returned 3.92% vs 4.07% for RBIL. At a 0.47 correlation, their price movements are largely independent. IBID charges 0.10%/yr vs 0.17%/yr for RBIL.

Performance

IBID vs. RBIL - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares iBonds Oct 2027 Term TIPS ETF (IBID) and F/m Ultrashort Treasury Inflation-Protected Security (TIPS) ETF (RBIL). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, IBID achieves a 1.94% return, which is significantly lower than RBIL's 2.32% return.

IBID

• 1D: -0.05%
• 1M: -0.25%
• YTD: 1.94%
• 6M: 2.03%
• 1Y: 3.92%
• 3Y*: —
• 5Y*: —
• 10Y*: —

RBIL

• 1D: 0.01%
• 1M: -0.19%
• YTD: 2.32%
• 6M: 2.37%
• 1Y: 4.07%
• 3Y*: —
• 5Y*: —
• 10Y*: —

*Multi-year figures are annualized to reflect compound growth (CAGR)

IBID vs. RBIL - Yearly Performance Comparison

	2026 (YTD)	2025
IBID iShares iBonds Oct 2027 Term TIPS ETF	1.94%	4.11%
RBIL F/m Ultrashort Treasury Inflation-Protected Security (TIPS) ETF	2.32%	2.85%

Correlation

The correlation between IBID and RBIL is 0.53, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.53
Correlation (All Time) Calculated using the full available price history since Feb 25, 2025	0.47

The correlation between IBID and RBIL has been stable across timeframes, ranging from 0.47 to 0.53 - a consistent structural relationship.

Return for Risk

IBID vs. RBIL — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

IBID

IBID Risk / Return Rank: 95
IBID Sharpe Ratio Rank: 94
IBID Sortino Ratio Rank: 96
IBID Omega Ratio Rank: 95
IBID Calmar Ratio Rank: 95
IBID Martin Ratio Rank: 95

RBIL

RBIL Risk / Return Rank: 97
RBIL Sharpe Ratio Rank: 97
RBIL Sortino Ratio Rank: 98
RBIL Omega Ratio Rank: 98
RBIL Calmar Ratio Rank: 96
RBIL Martin Ratio Rank: 97

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

IBID vs. RBIL - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares iBonds Oct 2027 Term TIPS ETF (IBID) 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.

	IBID	RBIL	Difference
Sharpe ratio: Return per unit of total volatility	3.19	4.35	-1.16
Sortino ratio: Return per unit of downside risk	5.38	6.69	-1.31
Omega ratio: Gain probability vs. loss probability	1.72	2.13	-0.41
Calmar ratio: Return relative to maximum drawdown	7.20	7.82	-0.62
Martin ratio: Return relative to average drawdown	29.14	42.95	-13.81

IBID vs. RBIL - Sharpe Ratio Comparison

The current IBID Sharpe Ratio is 3.19, which is comparable to the RBIL Sharpe Ratio of 4.35. The chart below compares the historical Sharpe Ratios of IBID and RBIL, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

IBID vs. RBIL - Drawdown Comparison

The maximum IBID drawdown since its inception was -1.28%, which is greater than RBIL's maximum drawdown of -0.52%. Use the drawdown chart below to compare losses from any high point for IBID and RBIL.

Drawdown Indicators

	IBID	RBIL	Difference
Max Drawdown Largest peak-to-trough decline	-1.28%	-0.52%	-0.76%
Max Drawdown (1Y) Largest decline over 1 year	-0.55%	-0.52%	-0.03%
Current Drawdown Current decline from peak	-0.55%	-0.50%	-0.05%
Average Drawdown Average peak-to-trough decline	-0.22%	-0.07%	-0.15%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.13%	0.10%	+0.03%

Volatility

IBID vs. RBIL - Volatility Comparison

iShares iBonds Oct 2027 Term TIPS ETF (IBID) and F/m Ultrashort Treasury Inflation-Protected Security (TIPS) ETF (RBIL) have volatilities of 0.35% and 0.36%, 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.

Volatility by Period

	IBID	RBIL	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.35%	0.36%	-0.01%
Volatility (6M) Calculated over the trailing 6-month period	0.86%	0.85%	+0.01%
Volatility (1Y) Calculated over the trailing 1-year period	1.23%	0.95%	+0.28%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	2.24%	1.07%	+1.17%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	2.24%	1.07%	+1.17%

IBID vs. RBIL - Expense Ratio Comparison

IBID 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

IBID vs. RBIL - Dividend Comparison

IBID's dividend yield for the trailing twelve months is around 3.68%, less than RBIL's 4.38% yield.

Position	TTM	2025	2024	2023
IBID iShares iBonds Oct 2027 Term TIPS ETF	3.68%	4.43%	4.24%	0.81%
RBIL F/m Ultrashort Treasury Inflation-Protected Security (TIPS) ETF	4.38%	3.65%	0.00%	0.00%

Frequently Asked Questions

Can I hold both IBID and RBIL in my portfolio?

IBID and RBIL have a correlation of 0.53, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, IBID or RBIL?

RBIL has higher volatility (0.36%) compared to IBID (0.35%). In terms of maximum drawdown, IBID dropped -1.28% vs RBIL's -0.52%.

Which ETF is better, IBID or RBIL?

On 1-year performance, RBIL leads with 4.07% vs 3.92% for IBID. On fees, IBID 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.

Which ETF has performed better, IBID or RBIL?

Over the 1-year period, RBIL has performed better with a 4.07% return vs 3.92%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, IBID or RBIL?

IBID is cheaper with a 0.10% expense ratio, compared with 0.17% for RBIL.

Which ETF pays a higher dividend yield, IBID or RBIL?

RBIL has the higher dividend yield at 4.38%, compared with 3.68% for IBID.

What is the main difference between IBID and RBIL?

IBID tracks ICE 2027 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 IBID and 0.17% for RBIL.

Which has better risk-adjusted returns?

RBIL currently has the higher Sharpe Ratio (4.35 vs 3.19), 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.