IBIL vs. IBIK

Last updated Jun 4, 2026

IBIL (iShares iBonds Oct 2035 Term TIPS ETF) and IBIK (iShares iBonds Oct 2034 Term TIPS ETF) are both Inflation-Protected Bonds funds from iShares - IBIL tracks the ICE 2035 Maturity US Treasury TIPS Index while IBIK tracks the iBonds Oct 2034 Term TIPS Index. Both are passively managed. Over the past year, IBIL returned 6.35% vs 6.15% for IBIK. Their correlation of 0.89 suggests significant overlap in exposure. Both charge a 0.10% expense ratio.

Performance

IBIL vs. IBIK - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares iBonds Oct 2035 Term TIPS ETF (IBIL) and iShares iBonds Oct 2034 Term TIPS ETF (IBIK). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, IBIL achieves a 1.59% return, which is significantly higher than IBIK's 1.45% return.

IBIL

• 1D: -0.33%
• 1M: -0.33%
• YTD: 1.59%
• 6M: 1.17%
• 1Y: 6.35%
• 3Y*: —
• 5Y*: —
• 10Y*: —

IBIK

• 1D: -0.25%
• 1M: -0.38%
• YTD: 1.45%
• 6M: 0.91%
• 1Y: 6.15%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

IBIL vs. IBIK - Yearly Performance Comparison

	2026 (YTD)	2025
IBIL iShares iBonds Oct 2035 Term TIPS ETF	1.59%	4.75%
IBIK iShares iBonds Oct 2034 Term TIPS ETF	1.45%	4.92%

Correlation

The correlation between IBIL and IBIK is 0.87, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.87
Correlation (All Time) Calculated using the full available price history since Mar 27, 2025	0.89

The correlation between IBIL and IBIK has been stable across timeframes, ranging from 0.87 to 0.89 - a consistent structural relationship.

Return for Risk

IBIL vs. IBIK — Risk / Return Rank

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

IBIL

IBIL Risk / Return Rank: 36
IBIL Sharpe Ratio Rank: 32
IBIL Sortino Ratio Rank: 31
IBIL Omega Ratio Rank: 35
IBIL Calmar Ratio Rank: 48
IBIL Martin Ratio Rank: 36

IBIK

IBIK Risk / Return Rank: 46
IBIK Sharpe Ratio Rank: 42
IBIK Sortino Ratio Rank: 46
IBIK Omega Ratio Rank: 40
IBIK Calmar Ratio Rank: 51
IBIK Martin Ratio Rank: 51

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.

IBIL vs. IBIK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares iBonds Oct 2035 Term TIPS ETF (IBIL) and iShares iBonds Oct 2034 Term TIPS ETF (IBIK). 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.

	IBIL	IBIK	Difference
Sharpe ratio: Return per unit of total volatility	1.14	1.47	-0.33
Sortino ratio: Return per unit of downside risk	1.61	2.22	-0.60
Omega ratio: Gain probability vs. loss probability	1.23	1.26	-0.03
Calmar ratio: Return relative to maximum drawdown	2.31	2.47	-0.15
Martin ratio: Return relative to average drawdown	5.52	8.52	-2.99
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

IBIL vs. IBIK - Sharpe Ratio Comparison

The current IBIL Sharpe Ratio is 1.14, which is comparable to the IBIK Sharpe Ratio of 1.47. The chart below compares the historical Sharpe Ratios of IBIL and IBIK, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	IBIL	IBIK	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.14	1.47	-0.33
Sharpe Ratio (All Time) Calculated using the full available price history	0.66	1.08	-0.42

Drawdowns

IBIL vs. IBIK - Drawdown Comparison

The maximum IBIL drawdown since its inception was -5.28%, smaller than the maximum IBIK drawdown of -5.59%. Use the drawdown chart below to compare losses from any high point for IBIL and IBIK.

Drawdown Indicators

	IBIL	IBIK	Difference
Max Drawdown Largest peak-to-trough decline	-5.28%	-5.59%	+0.31%
Max Drawdown (1Y) Largest decline over 1 year	-2.76%	-2.50%	-0.26%
Current Drawdown Current decline from peak	-0.66%	-0.65%	-0.01%
Average Drawdown Average peak-to-trough decline	-1.48%	-1.24%	-0.24%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.15%	0.72%	+0.43%

Volatility

IBIL vs. IBIK - Volatility Comparison

iShares iBonds Oct 2035 Term TIPS ETF (IBIL) and iShares iBonds Oct 2034 Term TIPS ETF (IBIK) have volatilities of 1.25% and 1.20%, 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

	IBIL	IBIK	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.25%	1.20%	+0.05%
Volatility (6M) Calculated over the trailing 6-month period	3.08%	2.82%	+0.26%
Volatility (1Y) Calculated over the trailing 1-year period	5.58%	4.21%	+1.37%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	8.20%	5.34%	+2.86%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	8.20%	5.34%	+2.86%

IBIL vs. IBIK - Expense Ratio Comparison

Both IBIL and IBIK have an expense ratio of 0.10%, making them cost-effective options compared to the broader market, where average expense ratios typically range from 0.3% to 0.9%.

Dividends

IBIL vs. IBIK - Dividend Comparison

IBIL's dividend yield for the trailing twelve months is around 3.47%, less than IBIK's 3.73% yield.

Position	TTM	2025	2024
IBIK iShares iBonds Oct 2034 Term TIPS ETF	3.73%	4.43%	2.67%
IBIL iShares iBonds Oct 2035 Term TIPS ETF	3.47%	2.93%	0.00%

Frequently Asked Questions

Can I hold both IBIL and IBIK in my portfolio?

IBIL and IBIK have a correlation of 0.87, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, IBIL or IBIK?

IBIL has higher volatility (1.25%) compared to IBIK (1.20%). In terms of maximum drawdown, IBIL dropped -5.28% vs IBIK's -5.59%.

Which ETF is better, IBIL or IBIK?

On 1-year performance, IBIL leads with 6.35% vs 6.15% for IBIK. Both ETFs have the same 0.10% expense ratio. 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, IBIL or IBIK?

Over the 1-year period, IBIL has performed better with a 6.35% return vs 6.15%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, IBIL or IBIK?

IBIL and IBIK have the same expense ratio: 0.10% per year.

Which ETF pays a higher dividend yield, IBIL or IBIK?

IBIK has the higher dividend yield at 3.73%, compared with 3.47% for IBIL.

What is the main difference between IBIL and IBIK?

IBIL tracks ICE 2035 Maturity US Treasury TIPS Index, while IBIK tracks iBonds Oct 2034 Term TIPS Index.

Which has better risk-adjusted returns?

IBIK currently has the higher Sharpe Ratio (1.47 vs 1.14), 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.