RFXIX vs. VMSAX

Last updated Jun 4, 2026

RFXIX (Rational Special Situations Income Fund) and VMSAX (Vanguard Multi-Sector Income Bond Fund Admiral Shares) are both Multisector Bonds funds. Over the past 3 years, RFXIX returned 5.71%/yr vs 7.92%/yr for VMSAX. At a 0.50 correlation, their price movements are largely independent. RFXIX charges 1.76%/yr vs 0.30%/yr for VMSAX.

Performance

RFXIX vs. VMSAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Rational Special Situations Income Fund (RFXIX) and Vanguard Multi-Sector Income Bond Fund Admiral Shares (VMSAX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, RFXIX achieves a 1.79% return, which is significantly higher than VMSAX's 1.19% return.

RFXIX

• 1D: 0.00%
• 1M: 0.23%
• YTD: 1.79%
• 6M: 1.65%
• 1Y: 5.05%
• 3Y*: 5.71%
• 5Y*: 4.26%
• 10Y*: —

VMSAX

• 1D: 0.05%
• 1M: 0.58%
• YTD: 1.19%
• 6M: 1.58%
• 1Y: 7.07%
• 3Y*: 7.92%
• 5Y*: —
• 10Y*: —

*Multi-year figures are annualized to reflect compound growth (CAGR)

RFXIX vs. VMSAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022
RFXIX Rational Special Situations Income Fund	1.79%	4.73%	8.95%	4.08%	-0.86%
VMSAX Vanguard Multi-Sector Income Bond Fund Admiral Shares	1.19%	9.08%	6.86%	10.53%	-8.42%

Correlation

The correlation between RFXIX and VMSAX is 0.51, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.51
Correlation (3Y) Calculated over the trailing 3-year period	0.53
Correlation (All Time) Calculated using the full available price history since Feb 2, 2022	0.50

The correlation between RFXIX and VMSAX has been stable across timeframes, ranging from 0.50 to 0.53 - a consistent structural relationship.

Return for Risk

RFXIX vs. VMSAX — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

RFXIX

RFXIX Risk / Return Rank: 97
RFXIX Sharpe Ratio Rank: 97
RFXIX Sortino Ratio Rank: 96
RFXIX Omega Ratio Rank: 98
RFXIX Calmar Ratio Rank: 97
RFXIX Martin Ratio Rank: 97

VMSAX

VMSAX Risk / Return Rank: 24
VMSAX Sharpe Ratio Rank: 3
VMSAX Sortino Ratio Rank: 11
VMSAX Omega Ratio Rank: 98
VMSAX Calmar Ratio Rank: 3
VMSAX Martin Ratio Rank: 7

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

RFXIX vs. VMSAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Rational Special Situations Income Fund (RFXIX) and Vanguard Multi-Sector Income Bond Fund Admiral Shares (VMSAX). 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.

	RFXIX	VMSAX	Difference
Sharpe ratio: Return per unit of total volatility	3.61	0.05	+3.56
Sortino ratio: Return per unit of downside risk	5.38	1.34	+4.03
Omega ratio: Gain probability vs. loss probability	2.10	2.12	-0.02
Calmar ratio: Return relative to maximum drawdown	7.03	0.13	+6.90
Martin ratio: Return relative to average drawdown	28.70	2.07	+26.63
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

RFXIX vs. VMSAX - Sharpe Ratio Comparison

The current RFXIX Sharpe Ratio is 3.61, which is higher than the VMSAX Sharpe Ratio of 0.05. The chart below compares the historical Sharpe Ratios of RFXIX and VMSAX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	RFXIX	VMSAX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.61	0.05	+3.56
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	2.19	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	1.41	0.07	+1.35

Drawdowns

RFXIX vs. VMSAX - Drawdown Comparison

The maximum RFXIX drawdown since its inception was -12.91%, smaller than the maximum VMSAX drawdown of -54.84%. Use the drawdown chart below to compare losses from any high point for RFXIX and VMSAX.

Drawdown Indicators

	RFXIX	VMSAX	Difference
Max Drawdown Largest peak-to-trough decline	-12.91%	-54.84%	+41.93%
Max Drawdown (1Y) Largest decline over 1 year	-0.72%	-54.84%	+54.12%
Max Drawdown (3Y) Largest decline over 3 years	-1.05%	-54.84%	+53.79%
Max Drawdown (5Y) Largest decline over 5 years	-4.93%	—	—
Current Drawdown Current decline from peak	0.00%	-0.02%	+0.02%
Average Drawdown Average peak-to-trough decline	-0.87%	-3.09%	+2.22%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.18%	3.49%	-3.31%

Volatility

RFXIX vs. VMSAX - Volatility Comparison

The current volatility for Rational Special Situations Income Fund (RFXIX) is 0.32%, while Vanguard Multi-Sector Income Bond Fund Admiral Shares (VMSAX) has a volatility of 0.95%. This indicates that RFXIX experiences smaller price fluctuations and is considered to be less risky than VMSAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RFXIX	VMSAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.32%	0.95%	-0.63%
Volatility (6M) Calculated over the trailing 6-month period	0.77%	112.84%	-112.07%
Volatility (1Y) Calculated over the trailing 1-year period	1.41%	133.32%	-131.91%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	1.95%	64.31%	-62.36%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	2.95%	64.31%	-61.36%

RFXIX vs. VMSAX - Expense Ratio Comparison

RFXIX has a 1.76% expense ratio, which is higher than VMSAX's 0.30% expense ratio.

Dividends

RFXIX vs. VMSAX - Dividend Comparison

RFXIX's dividend yield for the trailing twelve months is around 5.40%, less than VMSAX's 5.54% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019
RFXIX Rational Special Situations Income Fund	5.40%	5.02%	6.69%	7.85%	6.08%	5.04%	4.99%	1.39%
VMSAX Vanguard Multi-Sector Income Bond Fund Admiral Shares	5.54%	5.66%	6.48%	5.52%	3.76%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both RFXIX and VMSAX in my portfolio?

RFXIX and VMSAX have a correlation of 0.51, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, RFXIX or VMSAX?

VMSAX has higher volatility (0.95%) compared to RFXIX (0.32%). In terms of maximum drawdown, RFXIX dropped -12.91% vs VMSAX's -54.84%.

Which has better risk-adjusted returns?

RFXIX currently has the higher Sharpe Ratio (3.61 vs 0.05), 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.