BGRN vs. DFSB
BGRN (iShares USD Green Bond ETF) and DFSB (Dimensional Global Sustainability Fixed Income ETF) are both Global Bonds funds. BGRN is passively managed, while DFSB is actively managed. Over the past 3 years, BGRN returned 4.75%/yr vs 4.79%/yr for DFSB. Their correlation of 0.90 suggests significant overlap in exposure. BGRN charges 0.20%/yr vs 0.24%/yr for DFSB.
Performance
BGRN vs. DFSB - Performance Comparison
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Returns By Period
In the year-to-date period, BGRN achieves a 0.43% return, which is significantly lower than DFSB's 0.84% return.
BGRN
- 1D
- -0.20%
- 1M
- 0.31%
- YTD
- 0.43%
- 6M
- 0.49%
- 1Y
- 5.19%
- 3Y*
- 4.75%
- 5Y*
- 0.54%
- 10Y*
- —
DFSB
- 1D
- -0.28%
- 1M
- 0.75%
- YTD
- 0.84%
- 6M
- 0.49%
- 1Y
- 4.36%
- 3Y*
- 4.79%
- 5Y*
- —
- 10Y*
- —
BGRN vs. DFSB - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | |
|---|---|---|---|---|---|
BGRN iShares USD Green Bond ETF | 0.43% | 7.27% | 2.77% | 6.50% | 0.41% |
DFSB Dimensional Global Sustainability Fixed Income ETF | 0.84% | 5.22% | 2.45% | 9.37% | -0.77% |
Correlation
The correlation between BGRN and DFSB is 0.87, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.87 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.88 |
Correlation (All Time) Calculated using the full available price history since Nov 17, 2022 | 0.90 |
The correlation between BGRN and DFSB has been stable across timeframes, ranging from 0.87 to 0.90 - a consistent structural relationship.
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Return for Risk
BGRN vs. DFSB — Risk / Return Rank
BGRN
DFSB
BGRN vs. DFSB - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares USD Green Bond ETF (BGRN) and Dimensional Global Sustainability Fixed Income ETF (DFSB). 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 | DFSB | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.62 | ||
| Sortino ratioReturn per unit of downside risk | +1.03 | ||
| Omega ratioGain probability vs. loss probability | 1.32 | 1.20 | +0.12 |
| Calmar ratioReturn relative to maximum drawdown | 2.34 | 1.44 | +0.90 |
| Martin ratioReturn relative to average drawdown | 7.85 | 4.49 | +3.36 |
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 | DFSB | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.76 | 1.14 | +0.62 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.10 | — | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.45 | 0.88 | -0.43 |
Drawdowns
BGRN vs. DFSB - Drawdown Comparison
The maximum BGRN drawdown since its inception was -19.16%, which is greater than DFSB's maximum drawdown of -5.16%. Use the drawdown chart below to compare losses from any high point for BGRN and DFSB.
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Drawdown Indicators
| BGRN | DFSB | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -19.16% | -5.16% | -14.00% |
Max Drawdown (1Y)Largest decline over 1 year | -2.23% | -3.04% | +0.81% |
Max Drawdown (3Y)Largest decline over 3 years | -4.55% | -4.37% | -0.18% |
Max Drawdown (5Y)Largest decline over 5 years | -18.73% | — | — |
Current DrawdownCurrent decline from peak | -0.83% | -1.12% | +0.29% |
Average DrawdownAverage peak-to-trough decline | -5.79% | -1.26% | -4.53% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.66% | 0.97% | -0.31% |
Volatility
BGRN vs. DFSB - Volatility Comparison
The current volatility for iShares USD Green Bond ETF (BGRN) is 1.06%, while Dimensional Global Sustainability Fixed Income ETF (DFSB) has a volatility of 1.62%. This indicates that BGRN experiences smaller price fluctuations and is considered to be less risky than DFSB based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| BGRN | DFSB | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.06% | 1.62% | -0.56% |
Volatility (6M)Calculated over the trailing 6-month period | 2.24% | 3.10% | -0.86% |
Volatility (1Y)Calculated over the trailing 1-year period | 2.97% | 3.85% | -0.88% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 5.46% | 5.46% | 0.00% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 5.00% | 5.46% | -0.46% |
BGRN vs. DFSB - Expense Ratio Comparison
BGRN has a 0.20% expense ratio, which is lower than DFSB's 0.24% 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
BGRN vs. DFSB - Dividend Comparison
BGRN's dividend yield for the trailing twelve months is around 4.29%, more than DFSB's 3.61% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 |
|---|---|---|---|---|---|---|---|---|---|
BGRN iShares USD Green Bond ETF | 4.29% | 4.21% | 4.07% | 3.52% | 2.66% | 0.78% | 1.82% | 3.66% | 0.21% |
DFSB Dimensional Global Sustainability Fixed Income ETF | 3.61% | 3.46% | 4.35% | 5.27% | 0.41% | 0.00% | 0.00% | 0.00% | 0.00% |
Frequently Asked Questions
BGRN and DFSB have a correlation of 0.87, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
DFSB has higher volatility (1.62%) compared to BGRN (1.06%). In terms of maximum drawdown, BGRN dropped -19.16% vs DFSB's -5.16%.
On 3-year performance, DFSB leads with 4.79% vs 4.75% for BGRN. On fees, BGRN is cheaper at 0.20% per year. On volatility, BGRN has been the lower-risk option at 1.06%. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 3-year period, DFSB has performed better with a 4.79% return vs 4.75%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
BGRN is cheaper with a 0.20% expense ratio, compared with 0.24% for DFSB.
BGRN has the higher dividend yield at 4.29%, compared with 3.61% for DFSB.
They also come from different issuers: iShares and Dimensional. Their fees differ too: 0.20% for BGRN and 0.24% for DFSB.
BGRN currently has the higher Sharpe Ratio (1.76 vs 1.14), 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.
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