IBGL vs. IBGK

Last updated Jun 23, 2026

IBGL (iShares iBonds Dec 2055 Term Treasury ETF) and IBGK (iShares iBonds Dec 2054 Term Treasury ETF) are both exchange-traded funds - IBGL is a Government Bonds fund tracking the ICE 2055 Maturity US Treasury Index, while IBGK is a Long-Term Bond fund tracking the ICE 2054 Maturity US Treasury Index. Both are passively managed. Over the past year, IBGL returned 3.85% vs 3.97% for IBGK. With a 1.00 correlation, they move nearly in lockstep. Both charge a 0.07% expense ratio.

Performance

IBGL vs. IBGK - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares iBonds Dec 2055 Term Treasury ETF (IBGL) and iShares iBonds Dec 2054 Term Treasury ETF (IBGK). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, IBGL achieves a 0.74% return, which is significantly higher than IBGK's 0.56% return.

IBGL

• 1D: -0.66%
• 1M: 2.14%
• YTD: 0.74%
• 6M: 0.55%
• 1Y: 3.85%
• 3Y*: —
• 5Y*: —
• 10Y*: —

IBGK

• 1D: -0.69%
• 1M: 2.11%
• YTD: 0.56%
• 6M: 0.46%
• 1Y: 3.97%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

IBGL vs. IBGK - Yearly Performance Comparison

	2026 (YTD)	2025
IBGL iShares iBonds Dec 2055 Term Treasury ETF	0.74%	0.99%
IBGK iShares iBonds Dec 2054 Term Treasury ETF	0.56%	0.61%

Correlation

The correlation between IBGL and IBGK is 1.00 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	1.00
Correlation (All Time) Calculated using the full available price history since Mar 26, 2025	1.00

The correlation between IBGL and IBGK has been stable across timeframes, ranging from 1.00 to 1.00 - a consistent structural relationship.

Return for Risk

IBGL vs. IBGK — Risk / Return Rank

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

IBGL

IBGL Risk / Return Rank: 14
IBGL Sharpe Ratio Rank: 15
IBGL Sortino Ratio Rank: 14
IBGL Omega Ratio Rank: 13
IBGL Calmar Ratio Rank: 14
IBGL Martin Ratio Rank: 14

IBGK

IBGK Risk / Return Rank: 14
IBGK Sharpe Ratio Rank: 15
IBGK Sortino Ratio Rank: 14
IBGK Omega Ratio Rank: 13
IBGK Calmar Ratio Rank: 15
IBGK Martin Ratio Rank: 14

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.

IBGL vs. IBGK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares iBonds Dec 2055 Term Treasury ETF (IBGL) and iShares iBonds Dec 2054 Term Treasury ETF (IBGK). 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.

	IBGL	IBGK	Difference
Sharpe ratio: Return per unit of total volatility	0.43	0.44	-0.01
Sortino ratio: Return per unit of downside risk	0.68	0.70	-0.02
Omega ratio: Gain probability vs. loss probability	1.08	1.08	0.00
Calmar ratio: Return relative to maximum drawdown	0.53	0.55	-0.01
Martin ratio: Return relative to average drawdown	1.28	1.31	-0.03

IBGL vs. IBGK - Sharpe Ratio Comparison

The current IBGL Sharpe Ratio is 0.43, which is comparable to the IBGK Sharpe Ratio of 0.44. The chart below compares the historical Sharpe Ratios of IBGL and IBGK, 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

IBGL vs. IBGK - Drawdown Comparison

The maximum IBGL drawdown since its inception was -9.37%, smaller than the maximum IBGK drawdown of -14.62%. Use the drawdown chart below to compare losses from any high point for IBGL and IBGK.

Drawdown Indicators

	IBGL	IBGK	Difference
Max Drawdown Largest peak-to-trough decline	-9.37%	-14.62%	+5.25%
Max Drawdown (1Y) Largest decline over 1 year	-7.23%	-7.29%	+0.06%
Current Drawdown Current decline from peak	-3.45%	-8.35%	+4.90%
Average Drawdown Average peak-to-trough decline	-4.02%	-8.07%	+4.05%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.01%	3.04%	-0.03%

Volatility

IBGL vs. IBGK - Volatility Comparison

iShares iBonds Dec 2055 Term Treasury ETF (IBGL) and iShares iBonds Dec 2054 Term Treasury ETF (IBGK) have volatilities of 2.09% and 2.10%, 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

	IBGL	IBGK	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.09%	2.10%	-0.01%
Volatility (6M) Calculated over the trailing 6-month period	6.26%	6.33%	-0.07%
Volatility (1Y) Calculated over the trailing 1-year period	9.01%	9.08%	-0.07%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	10.45%	11.75%	-1.30%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	10.45%	11.75%	-1.30%

IBGL vs. IBGK - Expense Ratio Comparison

Both IBGL and IBGK have an expense ratio of 0.07%, making them cost-effective options compared to the broader market, where average expense ratios typically range from 0.3% to 0.9%.

Dividends

IBGL vs. IBGK - Dividend Comparison

IBGL's dividend yield for the trailing twelve months is around 4.66%, which matches IBGK's 4.67% yield.

Position	TTM	2025	2024
IBGK iShares iBonds Dec 2054 Term Treasury ETF	4.67%	4.59%	3.15%
IBGL iShares iBonds Dec 2055 Term Treasury ETF	4.66%	3.52%	0.00%

Frequently Asked Questions

Can I hold both IBGL and IBGK in my portfolio?

With a correlation of 1.00, IBGL and IBGK move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, IBGL or IBGK?

IBGK has higher volatility (2.10%) compared to IBGL (2.09%). In terms of maximum drawdown, IBGL dropped -9.37% vs IBGK's -14.62%.

Which ETF is better, IBGL or IBGK?

On 1-year performance, IBGK leads with 3.97% vs 3.85% for IBGL. Both ETFs have the same 0.07% 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, IBGL or IBGK?

Over the 1-year period, IBGK has performed better with a 3.97% return vs 3.85%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, IBGL or IBGK?

IBGL and IBGK have the same expense ratio: 0.07% per year.

Which ETF pays a higher dividend yield, IBGL or IBGK?

IBGL and IBGK have nearly identical dividend yields, around 4.66%.

What is the main difference between IBGL and IBGK?

IBGL is categorized as Government Bonds, while IBGK is Long-Term Bond. IBGL tracks ICE 2055 Maturity US Treasury Index, while IBGK tracks ICE 2054 Maturity US Treasury Index.

Which has better risk-adjusted returns?

IBGK currently has the higher Sharpe Ratio (0.44 vs 0.43), 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.