SSEYX vs. RWMGX

Last updated Jun 23, 2026

SSEYX (State Street Equity 500 Index II Portfolio) and RWMGX (American Funds Washington Mutual Investors Fund Class R-6) are both Large Cap Blend Equities funds. Over the past 10 years, SSEYX returned 15.49%/yr vs 13.24%/yr for RWMGX. Their correlation of 0.95 suggests significant overlap in exposure. SSEYX charges 0.02%/yr vs 0.27%/yr for RWMGX.

Performance

SSEYX vs. RWMGX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in State Street Equity 500 Index II Portfolio (SSEYX) and American Funds Washington Mutual Investors Fund Class R-6 (RWMGX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, SSEYX achieves a 10.19% return, which is significantly higher than RWMGX's 6.09% return. Over the past 10 years, SSEYX has outperformed RWMGX with an annualized return of 15.49%, while RWMGX has yielded a comparatively lower 13.24% annualized return.

SSEYX

• 1D: 1.08%
• 1M: 0.47%
• YTD: 10.19%
• 6M: 9.68%
• 1Y: 26.84%
• 3Y*: 20.87%
• 5Y*: 14.02%
• 10Y*: 15.49%

RWMGX

• 1D: 0.46%
• 1M: 0.72%
• YTD: 6.09%
• 6M: 5.67%
• 1Y: 18.15%
• 3Y*: 17.72%
• 5Y*: 12.94%
• 10Y*: 13.24%

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

SSEYX vs. RWMGX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
SSEYX State Street Equity 500 Index II Portfolio	10.19%	17.52%	25.01%	26.29%	-18.18%	28.58%	18.28%	31.42%	-4.54%	21.72%
RWMGX American Funds Washington Mutual Investors Fund Class R-6	6.09%	17.56%	19.35%	17.58%	-8.17%	28.84%	8.02%	25.78%	-5.91%	20.38%

Correlation

The correlation between SSEYX 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 Aug 14, 2014	0.95

The correlation between SSEYX and RWMGX has been stable across timeframes, ranging from 0.88 to 0.95 - a consistent structural relationship.

Return for Risk

SSEYX vs. RWMGX — Risk / Return Rank

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

SSEYX

SSEYX Risk / Return Rank: 65
SSEYX Sharpe Ratio Rank: 63
SSEYX Sortino Ratio Rank: 57
SSEYX Omega Ratio Rank: 59
SSEYX Calmar Ratio Rank: 67
SSEYX Martin Ratio Rank: 78

RWMGX

RWMGX Risk / Return Rank: 41
RWMGX Sharpe Ratio Rank: 40
RWMGX Sortino Ratio Rank: 41
RWMGX Omega Ratio Rank: 40
RWMGX Calmar Ratio Rank: 36
RWMGX Martin Ratio Rank: 48

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.

SSEYX vs. RWMGX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for State Street Equity 500 Index II Portfolio (SSEYX) 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.

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.

	SSEYX	RWMGX	Difference
Sharpe ratio: Return per unit of total volatility	2.14	1.72	+0.42
Sortino ratio: Return per unit of downside risk	2.90	2.46	+0.44
Omega ratio: Gain probability vs. loss probability	1.39	1.31	+0.08
Calmar ratio: Return relative to maximum drawdown	3.00	2.17	+0.83
Martin ratio: Return relative to average drawdown	13.58	9.39	+4.20

SSEYX vs. RWMGX - Sharpe Ratio Comparison

The current SSEYX Sharpe Ratio is 2.14, which is comparable to the RWMGX Sharpe Ratio of 1.72. The chart below compares the historical Sharpe Ratios of SSEYX and RWMGX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

SSEYX vs. RWMGX - Drawdown Comparison

The maximum SSEYX drawdown since its inception was -33.75%, roughly equal to the maximum RWMGX drawdown of -34.64%. Use the drawdown chart below to compare losses from any high point for SSEYX and RWMGX.

Drawdown Indicators

	SSEYX	RWMGX	Difference
Max Drawdown Largest peak-to-trough decline	-33.75%	-34.64%	+0.89%
Max Drawdown (1Y) Largest decline over 1 year	-8.88%	-8.35%	-0.53%
Max Drawdown (3Y) Largest decline over 3 years	-18.74%	-14.61%	-4.13%
Max Drawdown (5Y) Largest decline over 5 years	-24.52%	-18.46%	-6.06%
Max Drawdown (10Y) Largest decline over 10 years	-33.75%	-34.64%	+0.89%
Current Drawdown Current decline from peak	-1.35%	-0.56%	-0.79%
Average Drawdown Average peak-to-trough decline	-4.08%	-3.11%	-0.97%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.96%	1.93%	+0.03%

Volatility

SSEYX vs. RWMGX - Volatility Comparison

State Street Equity 500 Index II Portfolio (SSEYX) has a higher volatility of 4.76% compared to American Funds Washington Mutual Investors Fund Class R-6 (RWMGX) at 2.94%. This indicates that SSEYX'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.

Volatility by Period

	SSEYX	RWMGX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.76%	2.94%	+1.82%
Volatility (6M) Calculated over the trailing 6-month period	9.89%	8.06%	+1.83%
Volatility (1Y) Calculated over the trailing 1-year period	12.45%	10.52%	+1.93%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.00%	14.12%	+2.88%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.11%	16.34%	+1.77%

SSEYX vs. RWMGX - Expense Ratio Comparison

SSEYX has a 0.02% 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

SSEYX vs. RWMGX - Dividend Comparison

SSEYX's dividend yield for the trailing twelve months is around 1.26%, less than RWMGX's 10.06% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
RWMGX American Funds Washington Mutual Investors Fund Class R-6	10.06%	10.36%	10.36%	6.42%	6.63%	6.33%	3.35%	6.91%	4.67%	7.52%	6.66%	6.55%
SSEYX State Street Equity 500 Index II Portfolio	1.26%	1.38%	1.93%	1.46%	1.57%	2.48%	3.63%	2.36%	5.91%	5.37%	2.29%	3.47%

Frequently Asked Questions

Can I hold both SSEYX and RWMGX in my portfolio?

SSEYX 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.

Which is riskier, SSEYX or RWMGX?

SSEYX has higher volatility (4.76%) compared to RWMGX (2.94%). In terms of maximum drawdown, SSEYX dropped -33.75% vs RWMGX's -34.64%.

Which has better risk-adjusted returns?

SSEYX currently has the higher Sharpe Ratio (2.14 vs 1.72), 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.