OBIL vs. BOXX

Last updated Apr 2, 2026

Compare and contrast key facts about US Treasury 12 Month Bill ETF (OBIL) and Alpha Architect 1-3 Month Box ETF (BOXX).

OBIL and BOXX are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. OBIL is a passively managed fund by US Benchmark Series that tracks the performance of the ICE BofA US 1-Year Treasury Bill Index - Benchmark TR Gross. It was launched on Nov 14, 2022. BOXX is a passively managed fund by Alpha Architect that tracks the performance of the Solactive 1-3 Month US T-Bill Index. It was launched on Dec 27, 2022. Both OBIL and BOXX are passive ETFs, meaning that they are not actively managed but aim to replicate the performance of the underlying index as closely as possible.

Performance

OBIL vs. BOXX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in US Treasury 12 Month Bill ETF (OBIL) and Alpha Architect 1-3 Month Box ETF (BOXX). The values are adjusted to include any dividend payments, if applicable.

OBIL vs. BOXX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022
OBIL US Treasury 12 Month Bill ETF	0.63%	4.19%	4.94%	4.69%	0.07%
BOXX Alpha Architect 1-3 Month Box ETF	0.96%	4.37%	5.16%	5.04%	0.07%

Returns By Period

In the year-to-date period, OBIL achieves a 0.63% return, which is significantly lower than BOXX's 0.96% return.

OBIL

• 1D: 0.00%
• 1M: 0.15%
• YTD: 0.63%
• 6M: 1.56%
• 1Y: 3.80%
• 3Y*: 4.41%
• 5Y*: —
• 10Y*: —

BOXX

• 1D: -0.07%
• 1M: 0.32%
• YTD: 0.96%
• 6M: 2.05%
• 1Y: 4.22%
• 3Y*: 4.80%
• 5Y*: —
• 10Y*: —

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

OBIL vs. BOXX - Expense Ratio Comparison

OBIL has a 0.15% expense ratio, which is lower than BOXX's 0.19% 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%.

BOXX

Alpha Architect 1-3 Month Box ETF

OBIL

US Treasury 12 Month Bill ETF

Return for Risk

OBIL vs. BOXX — Risk / Return Rank

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

OBIL

OBIL Risk / Return Rank: 99
OBIL Sharpe Ratio Rank: 99
OBIL Sortino Ratio Rank: 99
OBIL Omega Ratio Rank: 99
OBIL Calmar Ratio Rank: 99
OBIL Martin Ratio Rank: 99

BOXX

BOXX Risk / Return Rank: 100
BOXX Sharpe Ratio Rank: 100
BOXX Sortino Ratio Rank: 100
BOXX Omega Ratio Rank: 100
BOXX Calmar Ratio Rank: 100
BOXX 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.

OBIL vs. BOXX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for US Treasury 12 Month Bill ETF (OBIL) and Alpha Architect 1-3 Month Box ETF (BOXX). 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.

	OBIL	BOXX	Difference
Sharpe ratio Return per unit of total volatility	6.62	12.86	-6.24
Sortino ratio Return per unit of downside risk	14.13	36.75	-22.62
Omega ratio Gain probability vs. loss probability	3.32	9.21	-5.89
Calmar ratio Return relative to maximum drawdown	27.56	61.54	-33.98
Martin ratio Return relative to average drawdown	108.39	571.35	-462.96
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

OBIL vs. BOXX - Sharpe Ratio Comparison

The current OBIL Sharpe Ratio is 6.62, which is lower than the BOXX Sharpe Ratio of 12.86. The chart below compares the historical Sharpe Ratios of OBIL and BOXX, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	OBIL	BOXX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	6.62	12.86	-6.24
Sharpe Ratio (All Time) Calculated using the full available price history	5.35	12.97	-7.61

Correlation

The correlation between OBIL and BOXX is 0.18, which is considered to be low. This implies their price changes are not closely related. A low correlation is generally favorable for portfolio diversification, as it helps to reduce overall risk by spreading it across multiple assets with different performance patterns.

Dividends

OBIL vs. BOXX - Dividend Comparison

OBIL's dividend yield for the trailing twelve months is around 3.70%, while BOXX has not paid dividends to shareholders.

	TTM	2025	2024	2023	2022
OBIL US Treasury 12 Month Bill ETF	3.70%	3.83%	4.56%	4.92%	0.52%
BOXX Alpha Architect 1-3 Month Box ETF	0.00%	0.00%	0.26%	0.00%	0.00%

Drawdowns

OBIL vs. BOXX - Drawdown Comparison

The maximum OBIL drawdown since its inception was -0.33%, which is greater than BOXX's maximum drawdown of -0.12%. Use the drawdown chart below to compare losses from any high point for OBIL and BOXX.

Drawdown Indicators

	OBIL	BOXX	Difference
Max Drawdown Largest peak-to-trough decline	-0.33%	-0.12%	-0.21%
Max Drawdown (1Y) Largest decline over 1 year	-0.14%	-0.07%	-0.07%
Current Drawdown Current decline from peak	0.00%	-0.07%	+0.07%
Average Drawdown Average peak-to-trough decline	-0.03%	0.00%	-0.03%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.04%	0.01%	+0.03%

Volatility

OBIL vs. BOXX - Volatility Comparison

US Treasury 12 Month Bill ETF (OBIL) has a higher volatility of 0.21% compared to Alpha Architect 1-3 Month Box ETF (BOXX) at 0.15%. This indicates that OBIL's price experiences larger fluctuations and is considered to be riskier than BOXX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	OBIL	BOXX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.21%	0.15%	+0.06%
Volatility (6M) Calculated over the trailing 6-month period	0.35%	0.25%	+0.10%
Volatility (1Y) Calculated over the trailing 1-year period	0.58%	0.33%	+0.25%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	0.84%	0.37%	+0.47%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	0.84%	0.37%	+0.47%