MXEBX vs. SSSYX

Last updated Jun 5, 2026

MXEBX (Great-West Core Strategies: U.S. Equity Fund) and SSSYX (State Street Equity 500 Index Fund Class K) are both Large Cap Blend Equities funds. Over the past 5 years, MXEBX returned 12.14%/yr vs 13.87%/yr for SSSYX. Their correlation of 0.89 suggests significant overlap in exposure. MXEBX charges 0.55%/yr vs 0.02%/yr for SSSYX.

Performance

MXEBX vs. SSSYX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Great-West Core Strategies: U.S. Equity Fund (MXEBX) and State Street Equity 500 Index Fund Class K (SSSYX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

The year-to-date returns for both investments are quite close, with MXEBX having a 10.80% return and SSSYX slightly higher at 10.87%.

MXEBX

• 1D: -0.58%
• 1M: 3.00%
• YTD: 10.80%
• 6M: 10.90%
• 1Y: 26.63%
• 3Y*: 20.54%
• 5Y*: 12.14%
• 10Y*: —

SSSYX

• 1D: -0.73%
• 1M: 4.17%
• YTD: 10.87%
• 6M: 10.78%
• 1Y: 27.97%
• 3Y*: 22.42%
• 5Y*: 13.87%
• 10Y*: 15.52%

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

MXEBX vs. SSSYX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
MXEBX Great-West Core Strategies: U.S. Equity Fund	10.80%	15.39%	21.55%	23.27%	-15.57%	26.53%	16.92%	30.28%	-14.15%
SSSYX State Street Equity 500 Index Fund Class K	10.87%	17.81%	24.99%	26.27%	-18.16%	28.51%	18.31%	31.38%	-9.45%

Correlation

The correlation between MXEBX and SSSYX 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	0.85
Correlation (5Y) Calculated over the trailing 5-year period	0.89
Correlation (All Time) Calculated using the full available price history since Jul 11, 2018	0.89

The correlation between MXEBX and SSSYX has been stable across timeframes, ranging from 0.85 to 0.89 - a consistent structural relationship.

Return for Risk

MXEBX vs. SSSYX — Risk / Return Rank

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

MXEBX

MXEBX Risk / Return Rank: 69
MXEBX Sharpe Ratio Rank: 68
MXEBX Sortino Ratio Rank: 65
MXEBX Omega Ratio Rank: 64
MXEBX Calmar Ratio Rank: 72
MXEBX Martin Ratio Rank: 75

SSSYX

SSSYX Risk / Return Rank: 66
SSSYX Sharpe Ratio Rank: 64
SSSYX Sortino Ratio Rank: 59
SSSYX Omega Ratio Rank: 60
SSSYX Calmar Ratio Rank: 67
SSSYX Martin Ratio Rank: 79

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.

MXEBX vs. SSSYX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Great-West Core Strategies: U.S. Equity Fund (MXEBX) and State Street Equity 500 Index Fund Class K (SSSYX). 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.

	MXEBX	SSSYX	Difference
Sharpe ratio: Return per unit of total volatility	2.36	2.37	-0.01
Sortino ratio: Return per unit of downside risk	3.28	3.24	+0.05
Omega ratio: Gain probability vs. loss probability	1.43	1.43	0.00
Calmar ratio: Return relative to maximum drawdown	3.18	3.16	+0.02
Martin ratio: Return relative to average drawdown	13.73	14.79	-1.06
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

MXEBX vs. SSSYX - Sharpe Ratio Comparison

The current MXEBX Sharpe Ratio is 2.36, which is comparable to the SSSYX Sharpe Ratio of 2.37. The chart below compares the historical Sharpe Ratios of MXEBX and SSSYX, 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

	MXEBX	SSSYX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.36	2.37	-0.01
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.73	0.83	-0.10
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.13	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.68	0.12	+0.56

Drawdowns

MXEBX vs. SSSYX - Drawdown Comparison

The maximum MXEBX drawdown since its inception was -35.75%, smaller than the maximum SSSYX drawdown of -91.48%. Use the drawdown chart below to compare losses from any high point for MXEBX and SSSYX.

Drawdown Indicators

	MXEBX	SSSYX	Difference
Max Drawdown Largest peak-to-trough decline	-35.75%	-91.48%	+55.73%
Max Drawdown (1Y) Largest decline over 1 year	-8.78%	-8.88%	+0.10%
Max Drawdown (3Y) Largest decline over 3 years	-18.77%	-18.74%	-0.03%
Max Drawdown (5Y) Largest decline over 5 years	-22.94%	-24.49%	+1.55%
Max Drawdown (10Y) Largest decline over 10 years	—	-91.48%	—
Current Drawdown Current decline from peak	-0.58%	-0.73%	+0.15%
Average Drawdown Average peak-to-trough decline	-5.19%	-4.15%	-1.04%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.00%	1.90%	+0.10%

Volatility

MXEBX vs. SSSYX - Volatility Comparison

Great-West Core Strategies: U.S. Equity Fund (MXEBX) and State Street Equity 500 Index Fund Class K (SSSYX) have volatilities of 2.99% and 2.92%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MXEBX	SSSYX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.99%	2.92%	+0.07%
Volatility (6M) Calculated over the trailing 6-month period	8.93%	8.98%	-0.05%
Volatility (1Y) Calculated over the trailing 1-year period	11.84%	11.88%	-0.04%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.92%	16.89%	+0.03%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.80%	124.43%	-104.63%

MXEBX vs. SSSYX - Expense Ratio Comparison

MXEBX has a 0.55% expense ratio, which is higher than SSSYX's 0.02% expense ratio.

Dividends

MXEBX vs. SSSYX - Dividend Comparison

MXEBX's dividend yield for the trailing twelve months is around 4.73%, more than SSSYX's 1.30% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
MXEBX Great-West Core Strategies: U.S. Equity Fund	4.73%	5.24%	8.63%	4.31%	7.75%	10.25%	0.50%	1.95%	0.62%	0.00%	0.00%	0.00%
SSSYX State Street Equity 500 Index Fund Class K	1.30%	1.44%	1.63%	1.78%	2.16%	2.76%	1.86%	4.44%	5.18%	5.94%	2.07%	1.84%

Frequently Asked Questions

Can I hold both MXEBX and SSSYX in my portfolio?

MXEBX and SSSYX 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, MXEBX or SSSYX?

MXEBX has higher volatility (2.99%) compared to SSSYX (2.92%). In terms of maximum drawdown, MXEBX dropped -35.75% vs SSSYX's -91.48%.

Which has better risk-adjusted returns?

SSSYX currently has the higher Sharpe Ratio (2.37 vs 2.36), 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.