GMUEX vs. FXAIX

Last updated Jun 4, 2026

GMUEX (GMO U.S. Equity Fund) and FXAIX (Fidelity 500 Index Fund) are both mutual funds - GMUEX is a Large Cap Value Equities fund managed by GMO, while FXAIX is a S&P 500 fund tracking the S&P 500 Index. Over the past 10 years, GMUEX returned 14.52%/yr vs 15.66%/yr for FXAIX. Their correlation of 0.95 suggests significant overlap in exposure. GMUEX charges 0.47%/yr vs 0.02%/yr for FXAIX.

Performance

GMUEX vs. FXAIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in GMO U.S. Equity Fund (GMUEX) and Fidelity 500 Index Fund (FXAIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, GMUEX achieves a 16.91% return, which is significantly higher than FXAIX's 11.71% return. Over the past 10 years, GMUEX has underperformed FXAIX with an annualized return of 14.52%, while FXAIX has yielded a comparatively higher 15.66% annualized return.

GMUEX

• 1D: 0.77%
• 1M: 9.18%
• YTD: 16.91%
• 6M: 18.19%
• 1Y: 43.66%
• 3Y*: 24.91%
• 5Y*: 13.77%
• 10Y*: 14.52%

FXAIX

• 1D: 0.13%
• 1M: 5.80%
• YTD: 11.71%
• 6M: 11.74%
• 1Y: 28.99%
• 3Y*: 22.75%
• 5Y*: 14.28%
• 10Y*: 15.66%

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

GMUEX vs. FXAIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
GMUEX GMO U.S. Equity Fund	16.91%	22.24%	20.97%	22.02%	-12.66%	24.28%	13.56%	28.62%	-9.77%	18.46%
FXAIX Fidelity 500 Index Fund	11.71%	17.84%	25.01%	26.29%	-18.14%	28.71%	18.42%	31.48%	-4.43%	21.82%

Correlation

The correlation between GMUEX and FXAIX is 0.93, 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	0.93
Correlation (3Y) Calculated over the trailing 3-year period	0.93
Correlation (5Y) Calculated over the trailing 5-year period	0.94
Correlation (10Y) Calculated over the trailing 10-year period	0.94
Correlation (All Time) Calculated using the full available price history since May 5, 2011	0.95

The correlation between GMUEX and FXAIX has been stable across timeframes, ranging from 0.93 to 0.95 - a consistent structural relationship.

Return for Risk

GMUEX vs. FXAIX — Risk / Return Rank

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

GMUEX

GMUEX Risk / Return Rank: 91
GMUEX Sharpe Ratio Rank: 94
GMUEX Sortino Ratio Rank: 90
GMUEX Omega Ratio Rank: 84
GMUEX Calmar Ratio Rank: 91
GMUEX Martin Ratio Rank: 93

FXAIX

FXAIX Risk / Return Rank: 73
FXAIX Sharpe Ratio Rank: 76
FXAIX Sortino Ratio Rank: 67
FXAIX Omega Ratio Rank: 67
FXAIX Calmar Ratio Rank: 74
FXAIX Martin Ratio Rank: 83

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.

GMUEX vs. FXAIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for GMO U.S. Equity Fund (GMUEX) and Fidelity 500 Index Fund (FXAIX). 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.

	GMUEX	FXAIX	Difference
Sharpe ratio: Return per unit of total volatility	3.28	2.52	+0.76
Sortino ratio: Return per unit of downside risk	4.41	3.42	+0.98
Omega ratio: Gain probability vs. loss probability	1.57	1.46	+0.12
Calmar ratio: Return relative to maximum drawdown	4.86	3.36	+1.50
Martin ratio: Return relative to average drawdown	20.65	15.70	+4.95
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

GMUEX vs. FXAIX - Sharpe Ratio Comparison

The current GMUEX Sharpe Ratio is 3.28, which is higher than the FXAIX Sharpe Ratio of 2.52. The chart below compares the historical Sharpe Ratios of GMUEX and FXAIX, 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

	GMUEX	FXAIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.28	2.52	+0.76
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.70	0.85	-0.15
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.75	0.87	-0.12
Sharpe Ratio (All Time) Calculated using the full available price history	0.30	0.82	-0.52

Drawdowns

GMUEX vs. FXAIX - Drawdown Comparison

The maximum GMUEX drawdown since its inception was -60.66%, which is greater than FXAIX's maximum drawdown of -33.79%. Use the drawdown chart below to compare losses from any high point for GMUEX and FXAIX.

Drawdown Indicators

	GMUEX	FXAIX	Difference
Max Drawdown Largest peak-to-trough decline	-60.66%	-33.79%	-26.87%
Max Drawdown (1Y) Largest decline over 1 year	-9.19%	-8.89%	-0.30%
Max Drawdown (3Y) Largest decline over 3 years	-20.85%	-18.76%	-2.09%
Max Drawdown (5Y) Largest decline over 5 years	-28.95%	-24.50%	-4.45%
Max Drawdown (10Y) Largest decline over 10 years	-33.90%	-33.79%	-0.11%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-17.25%	-3.79%	-13.46%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.16%	1.90%	+0.26%

Volatility

GMUEX vs. FXAIX - Volatility Comparison

GMO U.S. Equity Fund (GMUEX) has a higher volatility of 3.97% compared to Fidelity 500 Index Fund (FXAIX) at 2.83%. This indicates that GMUEX's price experiences larger fluctuations and is considered to be riskier than FXAIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	GMUEX	FXAIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.97%	2.83%	+1.14%
Volatility (6M) Calculated over the trailing 6-month period	10.45%	8.97%	+1.48%
Volatility (1Y) Calculated over the trailing 1-year period	13.59%	11.86%	+1.73%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.82%	16.91%	+2.91%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.50%	18.07%	+1.43%

GMUEX vs. FXAIX - Expense Ratio Comparison

GMUEX has a 0.47% expense ratio, which is higher than FXAIX's 0.02% expense ratio.

Dividends

GMUEX vs. FXAIX - Dividend Comparison

GMUEX's dividend yield for the trailing twelve months is around 9.99%, more than FXAIX's 1.03% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FXAIX Fidelity 500 Index Fund	1.03%	1.11%	1.25%	1.45%	1.69%	1.22%	1.60%	2.06%	2.72%	1.97%	2.52%	2.83%
GMUEX GMO U.S. Equity Fund	9.99%	11.68%	17.31%	12.10%	6.99%	14.17%	9.16%	12.24%	21.90%	11.22%	11.27%	12.88%

Frequently Asked Questions

Can I hold both GMUEX and FXAIX in my portfolio?

With a correlation of 0.93, GMUEX and FXAIX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, GMUEX or FXAIX?

GMUEX has higher volatility (3.97%) compared to FXAIX (2.83%). In terms of maximum drawdown, GMUEX dropped -60.66% vs FXAIX's -33.79%.

Which has better risk-adjusted returns?

GMUEX currently has the higher Sharpe Ratio (3.28 vs 2.52), 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.