VMBSX vs. CPXIX
VMBSX (Vanguard Mortgage-Backed Securities Index Fund Admiral Shares) and CPXIX (Cohen & Steers Preferred Securities and Income Fund, Inc.) are both mutual funds - VMBSX is a Total Bond Market fund managed by Vanguard, while CPXIX is a Preferred Stock fund managed by Cohen & Steers. Over the past 10 years, VMBSX returned 1.72%/yr vs 4.33%/yr for CPXIX. Their 0.24 correlation means their historical movements had little consistent relationship. VMBSX charges 0.07%/yr vs 0.84%/yr for CPXIX.
Performance
VMBSX vs. CPXIX - Performance Comparison
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Returns By Period
In the year-to-date period, VMBSX achieves a -0.08% return, which is significantly lower than CPXIX's 1.70% return. Over the past 10 years, VMBSX has underperformed CPXIX with an annualized return of 1.72%, while CPXIX has yielded a comparatively higher 4.33% annualized return.
VMBSX
- 1D
- -0.38%
- 1M
- -1.02%
- 6M
- -0.42%
- YTD
- -0.08%
- 1Y
- 3.41%
- 3Y*
- 4.65%
- 5Y*
- 0.27%
- 10Y*
- 1.72%
- ALL TIME*
- 2.31%
CPXIX
- 1D
- 0.10%
- 1M
- -0.54%
- 6M
- 0.90%
- YTD
- 1.70%
- 1Y
- 5.47%
- 3Y*
- 8.76%
- 5Y*
- 2.45%
- 10Y*
- 4.33%
- ALL TIME*
- 6.40%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $0.00 | $0.00 | $0.00 | |
| $0.00 | $0.00 | $0.00 |
VMBSX vs. CPXIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
VMBSX Vanguard Mortgage-Backed Securities Index Fund Admiral Shares | -0.08% | 8.43% | 1.76% | 4.99% | -11.56% | -1.35% | 3.74% | 11.47% | 0.87% | 2.32% |
CPXIX Cohen & Steers Preferred Securities and Income Fund, Inc. | 1.70% | 8.44% | 10.39% | 6.38% | -12.37% | 2.75% | 6.47% | 18.11% | -4.65% | 10.88% |
Correlation
The correlation between VMBSX and CPXIX is 0.45, which is low. Their historical price movements had little consistent relationship.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.45 |
Correlation (3Y) Balances recent behavior with more history. | 0.42 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.38 |
Correlation (10Y) Provides a long-term view across more market conditions. | 0.28 |
Correlation (All Time) Calculated using the full available price history since May 5, 2010 | 0.24 |
Over the past year, VMBSX and CPXIX have become more correlated (0.45) than their long-term average of 0.24, meaning their price movements have been converging.
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Return for Risk
VMBSX vs. CPXIX — Risk / Return Rank
VMBSX
CPXIX
VMBSX vs. CPXIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Vanguard Mortgage-Backed Securities Index Fund Admiral Shares (VMBSX) and Cohen & Steers Preferred Securities and Income Fund, Inc. (CPXIX). 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.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| VMBSX | CPXIX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -1.06 | ||
| Sortino ratioReturn per unit of downside risk | -1.64 | ||
| Omega ratioGain probability vs. loss probability | 1.20 | 1.49 | -0.29 |
| Calmar ratioReturn relative to maximum drawdown | 1.60 | 1.84 | -0.24 |
| Martin ratioReturn relative to average drawdown | 4.52 | 8.18 | -3.66 |
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Drawdowns
VMBSX vs. CPXIX - Drawdown Comparison
The maximum VMBSX drawdown since its inception was -17.44%, smaller than the maximum CPXIX drawdown of -25.56%. Use the drawdown chart below to compare losses from any high point for VMBSX and CPXIX.
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Drawdown Indicators
| VMBSX | CPXIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -17.44% | -25.56% | +8.12% |
Max Drawdown (1Y)Largest decline over 1 year | -2.67% | -3.00% | +0.33% |
Max Drawdown (3Y)Largest decline over 3 years | -6.43% | -3.91% | -2.52% |
Max Drawdown (5Y)Largest decline over 5 years | -17.01% | -20.00% | +2.99% |
Max Drawdown (10Y)Largest decline over 10 years | -17.44% | -25.56% | +8.12% |
Current DrawdownCurrent decline from peak | -2.09% | -0.70% | -1.39% |
Average DrawdownAverage peak-to-trough decline | -2.47% | -2.67% | +0.20% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.94% | 0.67% | +0.27% |
Volatility
VMBSX vs. CPXIX - Volatility Comparison
Vanguard Mortgage-Backed Securities Index Fund Admiral Shares (VMBSX) has a higher volatility of 1.17% compared to Cohen & Steers Preferred Securities and Income Fund, Inc. (CPXIX) at 0.69%. This indicates that VMBSX's price experiences larger fluctuations and is considered to be riskier than CPXIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| VMBSX | CPXIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.17% | 0.69% | +0.48% |
Volatility (6M)Calculated over the trailing 6-month period | 3.05% | 2.18% | +0.87% |
Volatility (1Y)Calculated over the trailing 1-year period | 3.81% | 2.52% | +1.29% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 6.44% | 4.71% | +1.73% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 4.88% | 6.15% | -1.27% |
VMBSX vs. CPXIX - Expense Ratio Comparison
VMBSX has a 0.07% expense ratio, which is lower than CPXIX's 0.84% expense ratio.
Dividends
VMBSX vs. CPXIX - Dividend Comparison
VMBSX's dividend yield for the trailing twelve months is around 3.87%, less than CPXIX's 5.88% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
CPXIX Cohen & Steers Preferred Securities and Income Fund, Inc. | 5.88% | 5.54% | 5.52% | 5.76% | 5.40% | 4.89% | 5.17% | 5.30% | 5.88% | 5.01% | 5.75% | 5.91% |
VMBSX Vanguard Mortgage-Backed Securities Index Fund Admiral Shares | 3.87% | 4.18% | 4.24% | 3.28% | 2.31% | 0.99% | 2.00% | 7.48% | 2.72% | 2.16% | 1.98% | 2.01% |
Frequently Asked Questions
VMBSX and CPXIX have a correlation of 0.45, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
VMBSX has higher volatility (1.17%) compared to CPXIX (0.69%). In terms of maximum drawdown, VMBSX dropped -17.44% vs CPXIX's -25.56%.
CPXIX currently has the higher Sharpe Ratio (2.19 vs 1.12), 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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