MRBIX vs. BMSIX
Compare and contrast key facts about MFS Total Return Bond Fund (MRBIX) and BlackRock Income Fund (BMSIX).
MRBIX is managed by MFS. It was launched on Jan 4, 1999. BMSIX is managed by BlackRock. It was launched on Feb 25, 2010.
Performance
MRBIX vs. BMSIX - Performance Comparison
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MRBIX vs. BMSIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
MRBIX MFS Total Return Bond Fund | -0.47% | 7.35% | 1.77% | 6.45% | -14.52% | -0.84% | 8.83% | 9.96% | -1.03% | 4.15% |
BMSIX BlackRock Income Fund | -1.60% | 8.38% | 5.96% | 7.84% | -10.08% | -0.29% | 6.94% | 12.03% | -1.03% | 6.62% |
Returns By Period
In the year-to-date period, MRBIX achieves a -0.47% return, which is significantly higher than BMSIX's -1.60% return. Over the past 10 years, MRBIX has underperformed BMSIX with an annualized return of 2.00%, while BMSIX has yielded a comparatively higher 3.86% annualized return.
MRBIX
- 1D
- 0.53%
- 1M
- -2.25%
- YTD
- -0.47%
- 6M
- 0.50%
- 1Y
- 3.94%
- 3Y*
- 3.80%
- 5Y*
- 0.24%
- 10Y*
- 2.00%
BMSIX
- 1D
- 0.22%
- 1M
- -2.30%
- YTD
- -1.60%
- 6M
- -0.11%
- 1Y
- 5.03%
- 3Y*
- 6.03%
- 5Y*
- 1.62%
- 10Y*
- 3.86%
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MRBIX vs. BMSIX - Expense Ratio Comparison
MRBIX has a 0.45% expense ratio, which is lower than BMSIX's 0.62% expense ratio.
Return for Risk
MRBIX vs. BMSIX — Risk / Return Rank
MRBIX
BMSIX
MRBIX vs. BMSIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for MFS Total Return Bond Fund (MRBIX) and BlackRock Income Fund (BMSIX). 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 | BMSIX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 1.07 | 1.85 | -0.77 |
Sortino ratioReturn per unit of downside risk | 1.55 | 2.77 | -1.22 |
Omega ratioGain probability vs. loss probability | 1.19 | 1.39 | -0.20 |
Calmar ratioReturn relative to maximum drawdown | 1.84 | 2.23 | -0.39 |
Martin ratioReturn relative to average drawdown | 5.51 | 9.30 | -3.80 |
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 | BMSIX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.07 | 1.85 | -0.77 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.04 | 0.44 | -0.40 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.41 | 0.94 | -0.53 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.97 | 1.20 | -0.22 |
Correlation
The correlation between MRBIX and BMSIX is 0.59, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.
Dividends
MRBIX vs. BMSIX - Dividend Comparison
MRBIX's dividend yield for the trailing twelve months is around 3.89%, less than BMSIX's 5.33% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
MRBIX MFS Total Return Bond Fund | 3.89% | 4.21% | 3.69% | 3.42% | 2.39% | 3.42% | 3.00% | 3.06% | 2.87% | 2.65% | 3.02% | 3.76% |
BMSIX BlackRock Income Fund | 5.33% | 5.66% | 5.99% | 4.38% | 3.71% | 5.31% | 4.19% | 4.90% | 5.13% | 4.03% | 4.49% | 4.35% |
Drawdowns
MRBIX vs. BMSIX - Drawdown Comparison
The maximum MRBIX drawdown since its inception was -19.25%, roughly equal to the maximum BMSIX drawdown of -18.60%. Use the drawdown chart below to compare losses from any high point for MRBIX and BMSIX.
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Drawdown Indicators
| MRBIX | BMSIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -19.25% | -18.60% | -0.65% |
Max Drawdown (1Y)Largest decline over 1 year | -2.77% | -2.51% | -0.26% |
Max Drawdown (5Y)Largest decline over 5 years | -19.25% | -16.52% | -2.73% |
Max Drawdown (10Y)Largest decline over 10 years | -19.25% | -18.60% | -0.65% |
Current DrawdownCurrent decline from peak | -2.25% | -2.30% | +0.05% |
Average DrawdownAverage peak-to-trough decline | -2.48% | -2.05% | -0.43% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.92% | 0.60% | +0.32% |
Volatility
MRBIX vs. BMSIX - Volatility Comparison
MFS Total Return Bond Fund (MRBIX) has a higher volatility of 1.46% compared to BlackRock Income Fund (BMSIX) at 1.24%. This indicates that MRBIX's price experiences larger fluctuations and is considered to be riskier than BMSIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| MRBIX | BMSIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.46% | 1.24% | +0.22% |
Volatility (6M)Calculated over the trailing 6-month period | 2.50% | 1.95% | +0.55% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.24% | 2.99% | +1.25% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 5.70% | 3.71% | +1.99% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 4.90% | 4.12% | +0.78% |