IBGC vs. BIL

Last updated Jun 27, 2026

IBGC (iShares iBonds Dec 2046 Term Treasury ETF) and BIL (SPDR Bloomberg 1-3 Month T-Bill ETF) are both Government Bonds funds - IBGC tracks the ICE 2046 Maturity US Treasury Index while BIL tracks the Bloomberg 1-3 Month U.S. Treasury Bill Index. Both are passively managed. At a correlation of -0.18, they often move in opposite directions. IBGC charges 0.07%/yr vs 0.14%/yr for BIL.

Performance

IBGC vs. BIL - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares iBonds Dec 2046 Term Treasury ETF (IBGC) and SPDR Bloomberg 1-3 Month T-Bill ETF (BIL). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

IBGC

• 1D: 0.10%
• 1M: 2.56%
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

BIL

• 1D: 0.03%
• 1M: 0.31%
• YTD: 1.73%
• 6M: 1.75%
• 1Y: 3.87%
• 3Y*: 4.61%
• 5Y*: 3.46%
• 10Y*: 2.21%

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

IBGC vs. BIL - Yearly Performance Comparison

	2026 (YTD)
IBGC iShares iBonds Dec 2046 Term Treasury ETF	2.82%
BIL SPDR Bloomberg 1-3 Month T-Bill ETF	0.94%

Correlation

The correlation between IBGC and BIL is -0.18, 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 (All Time) Calculated using the full available price history since Mar 26, 2026	-0.18

Return for Risk

IBGC vs. BIL — Risk / Return Rank

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

IBGC

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

BIL

BIL Risk / Return Rank: 100
BIL Sharpe Ratio Rank: 100
BIL Sortino Ratio Rank: 100
BIL Omega Ratio Rank: 100
BIL Calmar Ratio Rank: 100
BIL Martin Ratio Rank: 100

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.

IBGC vs. BIL - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares iBonds Dec 2046 Term Treasury ETF (IBGC) and SPDR Bloomberg 1-3 Month T-Bill ETF (BIL). 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.

	IBGC	BIL	Difference
Sharpe ratio: Return per unit of total volatility	—	19.47	—
Sortino ratio: Return per unit of downside risk	—	174.17	—
Omega ratio: Gain probability vs. loss probability	—	87.91	—
Calmar ratio: Return relative to maximum drawdown	—	355.37	—
Martin ratio: Return relative to average drawdown	—	2,817.87	—

Drawdowns

IBGC vs. BIL - Drawdown Comparison

The maximum IBGC drawdown since its inception was -4.29%, which is greater than BIL's maximum drawdown of -0.78%. Use the drawdown chart below to compare losses from any high point for IBGC and BIL.

Drawdown Indicators

	IBGC	BIL	Difference
Max Drawdown Largest peak-to-trough decline	-4.29%	-0.78%	-3.51%
Max Drawdown (1Y) Largest decline over 1 year	—	-0.01%	—
Max Drawdown (3Y) Largest decline over 3 years	—	-0.01%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-0.09%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-0.21%	—
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-1.14%	-0.26%	-0.88%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	0.00%	—

Volatility

Volatility by Period

	IBGC	BIL	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	0.07%	—
Volatility (6M) Calculated over the trailing 6-month period	—	0.14%	—
Volatility (1Y) Calculated over the trailing 1-year period	8.43%	0.20%	+8.23%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	8.43%	0.26%	+8.17%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	8.43%	0.26%	+8.17%

IBGC vs. BIL - Expense Ratio Comparison

IBGC has a 0.07% expense ratio, which is lower than BIL's 0.14% 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

IBGC vs. BIL - Dividend Comparison

IBGC's dividend yield for the trailing twelve months is around 0.79%, less than BIL's 3.85% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016
BIL SPDR Bloomberg 1-3 Month T-Bill ETF	3.85%	4.13%	5.03%	4.92%	1.35%	0.00%	0.30%	2.05%	1.66%	0.68%	0.07%
IBGC iShares iBonds Dec 2046 Term Treasury ETF	0.79%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both IBGC and BIL in my portfolio?

IBGC and BIL have a correlation of -0.18, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, IBGC or BIL?

On fees, IBGC is cheaper at 0.07% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, IBGC or BIL?

IBGC is cheaper with a 0.07% expense ratio, compared with 0.14% for BIL.

Which ETF pays a higher dividend yield, IBGC or BIL?

BIL has the higher dividend yield at 3.85%, compared with 0.79% for IBGC.

What is the main difference between IBGC and BIL?

IBGC tracks ICE 2046 Maturity US Treasury Index, while BIL tracks Bloomberg 1-3 Month U.S. Treasury Bill Index. They also come from different issuers: iShares and State Street. Their fees differ too: 0.07% for IBGC and 0.14% for BIL.