BOXA vs. BGRN

Last updated Apr 2, 2026

Compare and contrast key facts about Alpha Architect Aggregate Bond ETF (BOXA) and iShares USD Green Bond ETF (BGRN).

BOXA and BGRN are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. BOXA is an actively managed fund by Alpha Architect. It was launched on Dec 17, 2024. BGRN is a passively managed fund by iShares that tracks the performance of the Bloomberg MSCI USD Green Bond Select Index. It was launched on Nov 13, 2018.

Performance

BOXA vs. BGRN - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Alpha Architect Aggregate Bond ETF (BOXA) and iShares USD Green Bond ETF (BGRN). The values are adjusted to include any dividend payments, if applicable.

BOXA vs. BGRN - Yearly Performance Comparison

	2026 (YTD)	2025	2024
BOXA Alpha Architect Aggregate Bond ETF	-0.12%	5.41%	0.02%
BGRN iShares USD Green Bond ETF	-0.35%	7.27%	0.02%

Returns By Period

In the year-to-date period, BOXA achieves a -0.12% return, which is significantly higher than BGRN's -0.35% return.

BOXA

• 1D: -0.00%
• 1M: -1.56%
• YTD: -0.12%
• 6M: 0.47%
• 1Y: 2.74%
• 3Y*: —
• 5Y*: —
• 10Y*: —

BGRN

• 1D: -0.08%
• 1M: -1.27%
• YTD: -0.35%
• 6M: 0.46%
• 1Y: 4.44%
• 3Y*: 4.34%
• 5Y*: 0.29%
• 10Y*: —

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

BOXA vs. BGRN - Expense Ratio Comparison

BOXA has a 0.23% expense ratio, which is higher than BGRN's 0.20% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

BOXA

Alpha Architect Aggregate Bond ETF

BGRN

iShares USD Green Bond ETF

Return for Risk

BOXA vs. BGRN — Risk / Return Rank

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

BOXA

BOXA Risk / Return Rank: 33
BOXA Sharpe Ratio Rank: 33
BOXA Sortino Ratio Rank: 30
BOXA Omega Ratio Rank: 27
BOXA Calmar Ratio Rank: 39
BOXA Martin Ratio Rank: 36

BGRN

BGRN Risk / Return Rank: 67
BGRN Sharpe Ratio Rank: 69
BGRN Sortino Ratio Rank: 69
BGRN Omega Ratio Rank: 61
BGRN Calmar Ratio Rank: 72
BGRN Martin Ratio Rank: 65

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.

BOXA vs. BGRN - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Alpha Architect Aggregate Bond ETF (BOXA) and iShares USD Green Bond ETF (BGRN). 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.

	BOXA	BGRN	Difference
Sharpe ratio Return per unit of total volatility	0.67	1.26	-0.59
Sortino ratio Return per unit of downside risk	0.94	1.80	-0.86
Omega ratio Gain probability vs. loss probability	1.12	1.24	-0.12
Calmar ratio Return relative to maximum drawdown	1.08	2.01	-0.93
Martin ratio Return relative to average drawdown	3.43	6.94	-3.52
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

BOXA vs. BGRN - Sharpe Ratio Comparison

The current BOXA Sharpe Ratio is 0.67, which is lower than the BGRN Sharpe Ratio of 1.26. The chart below compares the historical Sharpe Ratios of BOXA and BGRN, 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

	BOXA	BGRN	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.67	1.26	-0.59
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.05	—
Sharpe Ratio (All Time) Calculated using the full available price history	1.00	0.44	+0.56

Correlation

The correlation between BOXA and BGRN is 0.89, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.

Dividends

BOXA vs. BGRN - Dividend Comparison

BOXA's dividend yield for the trailing twelve months is around 0.13%, less than BGRN's 4.27% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018
BOXA Alpha Architect Aggregate Bond ETF	0.13%	0.13%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
BGRN iShares USD Green Bond ETF	4.27%	4.21%	4.07%	3.52%	2.66%	0.78%	1.82%	3.66%	0.21%

Drawdowns

BOXA vs. BGRN - Drawdown Comparison

The maximum BOXA drawdown since its inception was -2.87%, smaller than the maximum BGRN drawdown of -19.16%. Use the drawdown chart below to compare losses from any high point for BOXA and BGRN.

Drawdown Indicators

	BOXA	BGRN	Difference
Max Drawdown Largest peak-to-trough decline	-2.87%	-19.16%	+16.29%
Max Drawdown (1Y) Largest decline over 1 year	-2.87%	-2.23%	-0.64%
Max Drawdown (5Y) Largest decline over 5 years	—	-18.73%	—
Current Drawdown Current decline from peak	-1.98%	-1.61%	-0.37%
Average Drawdown Average peak-to-trough decline	-0.59%	-5.90%	+5.31%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.91%	0.65%	+0.26%

Volatility

BOXA vs. BGRN - Volatility Comparison

Alpha Architect Aggregate Bond ETF (BOXA) has a higher volatility of 1.55% compared to iShares USD Green Bond ETF (BGRN) at 1.45%. This indicates that BOXA's price experiences larger fluctuations and is considered to be riskier than BGRN based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BOXA	BGRN	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.55%	1.45%	+0.10%
Volatility (6M) Calculated over the trailing 6-month period	2.41%	2.04%	+0.37%
Volatility (1Y) Calculated over the trailing 1-year period	4.14%	3.53%	+0.61%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	4.18%	5.46%	-1.28%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.18%	5.03%	-0.85%