MSUMX vs. RFXIX
Compare and contrast key facts about BlackRock US Mortgage Portfolio (MSUMX) and Rational Special Situations Income Fund (RFXIX).
MSUMX is managed by BlackRock. It was launched on Jul 28, 2005. RFXIX is managed by Rational Funds. It was launched on Jul 16, 2019.
Performance
MSUMX vs. RFXIX - Performance Comparison
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MSUMX vs. RFXIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | |
|---|---|---|---|---|---|---|---|---|
MSUMX BlackRock US Mortgage Portfolio | 0.03% | 8.32% | 5.88% | 5.29% | -14.00% | 2.42% | 5.66% | 1.96% |
RFXIX Rational Special Situations Income Fund | 1.01% | 4.73% | 8.95% | 4.08% | -0.85% | 5.30% | 2.84% | 1.91% |
Returns By Period
MSUMX
- 1D
- —
- 1M
- —
- YTD
- —
- 6M
- —
- 1Y
- —
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
RFXIX
- 1D
- 0.12%
- 1M
- -0.27%
- YTD
- 1.01%
- 6M
- 2.55%
- 1Y
- 4.36%
- 3Y*
- 5.84%
- 5Y*
- 4.27%
- 10Y*
- —
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MSUMX vs. RFXIX - Expense Ratio Comparison
MSUMX has a 0.45% expense ratio, which is lower than RFXIX's 1.76% expense ratio.
Return for Risk
MSUMX vs. RFXIX — Risk / Return Rank
MSUMX
RFXIX
MSUMX vs. RFXIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for BlackRock US Mortgage Portfolio (MSUMX) and Rational Special Situations Income Fund (RFXIX). 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.
Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.
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Sharpe Ratios by Period
| MSUMX | RFXIX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | — | 2.77 | — |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | — | 2.20 | — |
Sharpe Ratio (All Time)Calculated using the full available price history | — | 1.39 | — |
Correlation
The correlation between MSUMX and RFXIX is 0.46, 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
MSUMX vs. RFXIX - Dividend Comparison
MSUMX's dividend yield for the trailing twelve months is around 4.37%, less than RFXIX's 5.57% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
MSUMX BlackRock US Mortgage Portfolio | 4.37% | 5.72% | 5.81% | 3.86% | 2.85% | 2.20% | 3.30% | 3.35% | 3.88% | 2.95% | 3.24% | 2.96% |
RFXIX Rational Special Situations Income Fund | 5.57% | 5.02% | 6.69% | 7.85% | 6.08% | 5.04% | 4.99% | 1.39% | 0.00% | 0.00% | 0.00% | 0.00% |
Drawdowns
MSUMX vs. RFXIX - Drawdown Comparison
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Drawdown Indicators
| MSUMX | RFXIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | — | -12.91% | — |
Max Drawdown (1Y)Largest decline over 1 year | — | -0.94% | — |
Max Drawdown (5Y)Largest decline over 5 years | — | -4.93% | — |
Current DrawdownCurrent decline from peak | — | -0.27% | — |
Average DrawdownAverage peak-to-trough decline | — | -0.89% | — |
Ulcer IndexDepth and duration of drawdowns from previous peaks | — | 0.28% | — |
Volatility
MSUMX vs. RFXIX - Volatility Comparison
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Volatility by Period
| MSUMX | RFXIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | — | 0.37% | — |
Volatility (6M)Calculated over the trailing 6-month period | — | 0.88% | — |
Volatility (1Y)Calculated over the trailing 1-year period | — | 1.56% | — |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | — | 1.95% | — |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | — | 2.98% | — |