VINIX vs. RWMGX
VINIX (Vanguard Institutional Index Fund Institutional Shares) and RWMGX (American Funds Washington Mutual Investors Fund Class R-6) are both mutual funds - VINIX is a S&P 500 fund tracking the S&P 500 Index, while RWMGX is a Large Cap Blend Equities fund managed by American Funds. Over the past 10 years, VINIX returned 15.63%/yr vs 13.17%/yr for RWMGX. With a 0.96 correlation, they move nearly in lockstep. VINIX charges 0.04%/yr vs 0.27%/yr for RWMGX.
Performance
VINIX vs. RWMGX - Performance Comparison
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Returns By Period
In the year-to-date period, VINIX achieves a 10.87% return, which is significantly higher than RWMGX's 5.55% return. Over the past 10 years, VINIX has outperformed RWMGX with an annualized return of 15.63%, while RWMGX has yielded a comparatively lower 13.17% annualized return.
VINIX
- 1D
- -0.73%
- 1M
- 4.17%
- YTD
- 10.87%
- 6M
- 10.79%
- 1Y
- 28.00%
- 3Y*
- 22.85%
- 5Y*
- 14.03%
- 10Y*
- 15.63%
RWMGX
- 1D
- -0.44%
- 1M
- 1.77%
- YTD
- 5.55%
- 6M
- 5.81%
- 1Y
- 17.43%
- 3Y*
- 18.43%
- 5Y*
- 12.03%
- 10Y*
- 13.17%
VINIX vs. RWMGX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
VINIX Vanguard Institutional Index Fund Institutional Shares | 10.87% | 17.85% | 26.28% | 25.77% | -18.15% | 28.67% | 18.40% | 31.46% | -4.42% | 21.79% |
RWMGX American Funds Washington Mutual Investors Fund Class R-6 | 5.55% | 17.56% | 19.35% | 17.58% | -8.17% | 28.84% | 8.02% | 25.78% | -5.91% | 20.38% |
Correlation
The correlation between VINIX and RWMGX is 0.88, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.88 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.91 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.93 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.94 |
Correlation (All Time) Calculated using the full available price history since Jan 5, 2010 | 0.96 |
The correlation between VINIX and RWMGX has been stable across timeframes, ranging from 0.88 to 0.96 - a consistent structural relationship.
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Return for Risk
VINIX vs. RWMGX — Risk / Return Rank
VINIX
RWMGX
VINIX vs. RWMGX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Vanguard Institutional Index Fund Institutional Shares (VINIX) and American Funds Washington Mutual Investors Fund Class R-6 (RWMGX). 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.
| VINIX | RWMGX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.68 | ||
| Sortino ratioReturn per unit of downside risk | +0.81 | ||
| Omega ratioGain probability vs. loss probability | 1.43 | 1.31 | +0.12 |
| Calmar ratioReturn relative to maximum drawdown | 3.16 | 2.09 | +1.07 |
| Martin ratioReturn relative to average drawdown | 14.78 | 9.06 | +5.73 |
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
| VINIX | RWMGX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 2.37 | 1.69 | +0.68 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.84 | 0.86 | -0.02 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.87 | 0.81 | +0.06 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.61 | 0.82 | -0.21 |
Drawdowns
VINIX vs. RWMGX - Drawdown Comparison
The maximum VINIX drawdown since its inception was -55.19%, which is greater than RWMGX's maximum drawdown of -34.64%. Use the drawdown chart below to compare losses from any high point for VINIX and RWMGX.
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Drawdown Indicators
| VINIX | RWMGX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -55.19% | -34.64% | -20.55% |
Max Drawdown (1Y)Largest decline over 1 year | -8.90% | -8.35% | -0.55% |
Max Drawdown (3Y)Largest decline over 3 years | -18.75% | -14.61% | -4.14% |
Max Drawdown (5Y)Largest decline over 5 years | -24.51% | -18.46% | -6.05% |
Max Drawdown (10Y)Largest decline over 10 years | -33.79% | -34.64% | +0.85% |
Current DrawdownCurrent decline from peak | -0.73% | -0.44% | -0.29% |
Average DrawdownAverage peak-to-trough decline | -8.53% | -3.12% | -5.41% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.90% | 1.92% | -0.02% |
Volatility
VINIX vs. RWMGX - Volatility Comparison
Vanguard Institutional Index Fund Institutional Shares (VINIX) has a higher volatility of 2.93% compared to American Funds Washington Mutual Investors Fund Class R-6 (RWMGX) at 2.38%. This indicates that VINIX's price experiences larger fluctuations and is considered to be riskier than RWMGX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| VINIX | RWMGX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 2.93% | 2.38% | +0.55% |
Volatility (6M)Calculated over the trailing 6-month period | 8.99% | 7.81% | +1.18% |
Volatility (1Y)Calculated over the trailing 1-year period | 11.89% | 10.32% | +1.57% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 16.89% | 14.10% | +2.79% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 18.06% | 16.32% | +1.74% |
VINIX vs. RWMGX - Expense Ratio Comparison
VINIX has a 0.04% expense ratio, which is lower than RWMGX's 0.27% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.
Dividends
VINIX vs. RWMGX - Dividend Comparison
VINIX's dividend yield for the trailing twelve months is around 2.41%, less than RWMGX's 9.86% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
RWMGX American Funds Washington Mutual Investors Fund Class R-6 | 9.86% | 10.36% | 10.36% | 6.42% | 6.63% | 6.33% | 3.35% | 6.91% | 4.67% | 7.52% | 6.66% | 6.55% |
VINIX Vanguard Institutional Index Fund Institutional Shares | 2.41% | 2.10% | 3.64% | 2.65% | 3.38% | 4.77% | 3.06% | 2.85% | 2.43% | 1.82% | 2.36% | 2.45% |
Frequently Asked Questions
VINIX and RWMGX have a correlation of 0.88, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
VINIX has higher volatility (2.93%) compared to RWMGX (2.38%). In terms of maximum drawdown, VINIX dropped -55.19% vs RWMGX's -34.64%.
VINIX currently has the higher Sharpe Ratio (2.37 vs 1.69), 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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