BGRN vs. BOXA
Compare and contrast key facts about iShares USD Green Bond ETF (BGRN) and Alpha Architect Aggregate Bond ETF (BOXA).
BGRN and BOXA are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. 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. BOXA is an actively managed fund by Alpha Architect. It was launched on Dec 17, 2024.
Performance
BGRN vs. BOXA - Performance Comparison
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BGRN vs. BOXA - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | |
|---|---|---|---|
BGRN iShares USD Green Bond ETF | -0.35% | 7.27% | 0.02% |
BOXA Alpha Architect Aggregate Bond ETF | -0.12% | 5.41% | 0.02% |
Returns By Period
In the year-to-date period, BGRN achieves a -0.35% return, which is significantly lower than BOXA's -0.12% return.
BGRN
- 1D
- -0.08%
- 1M
- -1.27%
- YTD
- -0.35%
- 6M
- 0.46%
- 1Y
- 4.44%
- 3Y*
- 4.34%
- 5Y*
- 0.29%
- 10Y*
- —
BOXA
- 1D
- -0.00%
- 1M
- -1.56%
- YTD
- -0.12%
- 6M
- 0.47%
- 1Y
- 2.74%
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
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BGRN vs. BOXA - Expense Ratio Comparison
BGRN has a 0.20% expense ratio, which is lower than BOXA's 0.23% 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%.
Return for Risk
BGRN vs. BOXA — Risk / Return Rank
BGRN
BOXA
BGRN vs. BOXA - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares USD Green Bond ETF (BGRN) and Alpha Architect Aggregate Bond ETF (BOXA). 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.
| BGRN | BOXA | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 1.26 | 0.67 | +0.59 |
Sortino ratioReturn per unit of downside risk | 1.80 | 0.94 | +0.86 |
Omega ratioGain probability vs. loss probability | 1.24 | 1.12 | +0.12 |
Calmar ratioReturn relative to maximum drawdown | 2.01 | 1.08 | +0.93 |
Martin ratioReturn relative to average drawdown | 6.94 | 3.43 | +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. | |||
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Sharpe Ratios by Period
| BGRN | BOXA | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.26 | 0.67 | +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 | 0.44 | 1.00 | -0.56 |
Correlation
The correlation between BGRN and BOXA 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
BGRN vs. BOXA - Dividend Comparison
BGRN's dividend yield for the trailing twelve months is around 4.27%, more than BOXA's 0.13% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | |
|---|---|---|---|---|---|---|---|---|---|
BGRN iShares USD Green Bond ETF | 4.27% | 4.21% | 4.07% | 3.52% | 2.66% | 0.78% | 1.82% | 3.66% | 0.21% |
BOXA Alpha Architect Aggregate Bond ETF | 0.13% | 0.13% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
Drawdowns
BGRN vs. BOXA - Drawdown Comparison
The maximum BGRN drawdown since its inception was -19.16%, which is greater than BOXA's maximum drawdown of -2.87%. Use the drawdown chart below to compare losses from any high point for BGRN and BOXA.
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Drawdown Indicators
| BGRN | BOXA | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -19.16% | -2.87% | -16.29% |
Max Drawdown (1Y)Largest decline over 1 year | -2.23% | -2.87% | +0.64% |
Max Drawdown (5Y)Largest decline over 5 years | -18.73% | — | — |
Current DrawdownCurrent decline from peak | -1.61% | -1.98% | +0.37% |
Average DrawdownAverage peak-to-trough decline | -5.90% | -0.59% | -5.31% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.65% | 0.91% | -0.26% |
Volatility
BGRN vs. BOXA - Volatility Comparison
The current volatility for iShares USD Green Bond ETF (BGRN) is 1.45%, while Alpha Architect Aggregate Bond ETF (BOXA) has a volatility of 1.55%. This indicates that BGRN experiences smaller price fluctuations and is considered to be less risky than BOXA based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| BGRN | BOXA | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.45% | 1.55% | -0.10% |
Volatility (6M)Calculated over the trailing 6-month period | 2.04% | 2.41% | -0.37% |
Volatility (1Y)Calculated over the trailing 1-year period | 3.53% | 4.14% | -0.61% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 5.46% | 4.18% | +1.28% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 5.03% | 4.18% | +0.85% |