MRBIX vs. BND
Compare and contrast key facts about MFS Total Return Bond Fund (MRBIX) and Vanguard Total Bond Market ETF (BND).
MRBIX is managed by MFS. It was launched on Jan 4, 1999. BND is a passively managed fund by Vanguard that tracks the performance of the Bloomberg U.S. Aggregate Float Adjusted Index. It was launched on Apr 3, 2007.
Performance
MRBIX vs. BND - Performance Comparison
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MRBIX vs. BND - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
MRBIX MFS Total Return Bond Fund | -0.26% | 7.35% | 1.77% | 6.45% | -14.52% | -0.84% | 8.83% | 9.96% | -1.03% | 4.15% |
BND Vanguard Total Bond Market ETF | 0.09% | 7.08% | 1.38% | 5.65% | -13.11% | -1.86% | 7.71% | 8.84% | -0.12% | 3.57% |
Returns By Period
In the year-to-date period, MRBIX achieves a -0.26% return, which is significantly lower than BND's 0.09% return. Over the past 10 years, MRBIX has outperformed BND with an annualized return of 2.02%, while BND has yielded a comparatively lower 1.68% annualized return.
MRBIX
- 1D
- 0.21%
- 1M
- -1.65%
- YTD
- -0.26%
- 6M
- 0.50%
- 1Y
- 3.94%
- 3Y*
- 3.88%
- 5Y*
- 0.21%
- 10Y*
- 2.02%
BND
- 1D
- 0.04%
- 1M
- -1.30%
- YTD
- 0.09%
- 6M
- 0.74%
- 1Y
- 3.96%
- 3Y*
- 3.60%
- 5Y*
- 0.25%
- 10Y*
- 1.68%
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MRBIX vs. BND - Expense Ratio Comparison
MRBIX has a 0.45% expense ratio, which is higher than BND's 0.03% expense ratio.
Return for Risk
MRBIX vs. BND — Risk / Return Rank
MRBIX
BND
MRBIX vs. BND - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for MFS Total Return Bond Fund (MRBIX) and Vanguard Total Bond Market ETF (BND). 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.
| MRBIX | BND | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.99 | 0.93 | +0.07 |
Sortino ratioReturn per unit of downside risk | 1.43 | 1.32 | +0.11 |
Omega ratioGain probability vs. loss probability | 1.17 | 1.16 | +0.01 |
Calmar ratioReturn relative to maximum drawdown | 1.72 | 1.75 | -0.04 |
Martin ratioReturn relative to average drawdown | 5.10 | 4.78 | +0.32 |
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
| MRBIX | BND | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.99 | 0.93 | +0.07 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.04 | 0.04 | 0.00 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.41 | 0.30 | +0.11 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.97 | 0.59 | +0.38 |
Correlation
The correlation between MRBIX and BND is 0.84, 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
MRBIX vs. BND - Dividend Comparison
MRBIX's dividend yield for the trailing twelve months is around 3.88%, less than BND's 3.93% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
MRBIX MFS Total Return Bond Fund | 3.88% | 4.21% | 3.69% | 3.42% | 2.39% | 3.42% | 3.00% | 3.06% | 2.87% | 2.65% | 3.02% | 3.76% |
BND Vanguard Total Bond Market ETF | 3.93% | 3.86% | 3.67% | 3.09% | 2.60% | 2.12% | 2.38% | 2.72% | 2.81% | 2.54% | 2.51% | 2.57% |
Drawdowns
MRBIX vs. BND - Drawdown Comparison
The maximum MRBIX drawdown since its inception was -19.25%, roughly equal to the maximum BND drawdown of -18.58%. Use the drawdown chart below to compare losses from any high point for MRBIX and BND.
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Drawdown Indicators
| MRBIX | BND | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -19.25% | -18.58% | -0.67% |
Max Drawdown (1Y)Largest decline over 1 year | -2.77% | -2.44% | -0.33% |
Max Drawdown (5Y)Largest decline over 5 years | -19.25% | -17.91% | -1.34% |
Max Drawdown (10Y)Largest decline over 10 years | -19.25% | -18.58% | -0.67% |
Current DrawdownCurrent decline from peak | -2.05% | -2.54% | +0.49% |
Average DrawdownAverage peak-to-trough decline | -2.48% | -3.07% | +0.59% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.93% | 0.90% | +0.03% |
Volatility
MRBIX vs. BND - Volatility Comparison
The current volatility for MFS Total Return Bond Fund (MRBIX) is 1.46%, while Vanguard Total Bond Market ETF (BND) has a volatility of 1.63%. This indicates that MRBIX experiences smaller price fluctuations and is considered to be less risky than BND based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| MRBIX | BND | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.46% | 1.63% | -0.17% |
Volatility (6M)Calculated over the trailing 6-month period | 2.50% | 2.52% | -0.02% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.24% | 4.30% | -0.06% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 5.70% | 6.00% | -0.30% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 4.90% | 5.52% | -0.62% |