GRISX vs. GMXAX

Last updated Aug 1, 2026

GRISX (Nationwide S&P 500 Index Fund) and GMXAX (Nationwide Mid Cap Market Index Fund) are both mutual funds - GRISX is a S&P 500 fund tracking the S&P 500 Index, while GMXAX is a Mid Cap Blend Equities fund managed by Nationwide. Over the past 10 years, GRISX returned 14.61%/yr vs 9.06%/yr for GMXAX. Their correlation of 0.89 means they have usually moved in the same direction. GRISX charges 0.44%/yr vs 0.68%/yr for GMXAX.

Performance

GRISX vs. GMXAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Nationwide S&P 500 Index Fund (GRISX) and Nationwide Mid Cap Market Index Fund (GMXAX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, GRISX achieves a 9.12% return, which is significantly lower than GMXAX's 14.41% return. Over the past 10 years, GRISX has outperformed GMXAX with an annualized return of 14.61%, while GMXAX has yielded a comparatively lower 9.06% annualized return.

GRISX

• 1D: 1.67%
• 1M: -0.59%
• 6M: 7.58%
• YTD: 9.12%
• 1Y: 20.24%
• 3Y*: 18.38%
• 5Y*: 12.15%
• 10Y*: 14.61%
• ALL TIME*: 8.20%

GMXAX

• 1D: 0.82%
• 1M: -0.92%
• 6M: 10.01%
• YTD: 14.41%
• 1Y: 22.36%
• 3Y*: 12.08%
• 5Y*: 7.77%
• 10Y*: 9.06%
• ALL TIME*: 8.80%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
GMXAX Nationwide Mid Cap Market Index Fund	$0.00	$0.00	$0.00
GRISX Nationwide S&P 500 Index Fund	$0.00	$0.00	$0.00

GRISX vs. GMXAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
GRISX Nationwide S&P 500 Index Fund	9.12%	17.41%	24.13%	25.55%	-18.49%	28.32%	17.92%	30.94%	-3.84%	21.35%
GMXAX Nationwide Mid Cap Market Index Fund	14.41%	6.84%	12.15%	15.89%	-13.45%	24.33%	12.79%	25.35%	-10.65%	2.80%

Correlation

The correlation between GRISX and GMXAX is 0.76, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.76
Correlation (3Y) Balances recent behavior with more history.	0.79
Correlation (5Y) Shows whether the relationship held over a longer period.	0.84
Correlation (10Y) Provides a long-term view across more market conditions.	0.84
Correlation (All Time) Calculated using the full available price history since Jan 3, 2000	0.89

The correlation between GRISX and GMXAX shifts across timeframes, from 0.76 (1 year) to 0.89 (all time), reflecting how their relationship changes across market environments.

Return for Risk

GRISX vs. GMXAX — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

GRISX

GRISX Risk / Return Rank: 58
GRISX Sharpe Ratio Rank: 56
GRISX Sortino Ratio Rank: 53
GRISX Omega Ratio Rank: 54
GRISX Calmar Ratio Rank: 59
GRISX Martin Ratio Rank: 71

GMXAX

GMXAX Risk / Return Rank: 50
GMXAX Sharpe Ratio Rank: 41
GMXAX Sortino Ratio Rank: 45
GMXAX Omega Ratio Rank: 39
GMXAX Calmar Ratio Rank: 65
GMXAX Martin Ratio Rank: 61

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

GRISX vs. GMXAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Nationwide S&P 500 Index Fund (GRISX) and Nationwide Mid Cap Market Index Fund (GMXAX). 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.

	GRISX	GMXAX	Difference
Sharpe ratio: Return per unit of total volatility	1.39	1.23	+0.16
Sortino ratio: Return per unit of downside risk	1.95	1.86	+0.10
Omega ratio: Gain probability vs. loss probability	1.25	1.22	+0.03
Calmar ratio: Return relative to maximum drawdown	2.00	2.18	-0.18
Martin ratio: Return relative to average drawdown	8.58	7.89	+0.69

GRISX vs. GMXAX - Sharpe Ratio Comparison

The current GRISX Sharpe Ratio is 1.39, which is comparable to the GMXAX Sharpe Ratio of 1.23. The chart below compares the historical Sharpe Ratios of GRISX and GMXAX, 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

GRISX vs. GMXAX - Drawdown Comparison

The maximum GRISX drawdown since its inception was -55.53%, roughly equal to the maximum GMXAX drawdown of -55.64%. Use the drawdown chart below to compare losses from any high point for GRISX and GMXAX.

Drawdown Indicators

	GRISX	GMXAX	Difference
Max Drawdown Largest peak-to-trough decline	-55.53%	-55.64%	+0.11%
Max Drawdown (1Y) Largest decline over 1 year	-8.95%	-8.83%	-0.12%
Max Drawdown (3Y) Largest decline over 3 years	-18.78%	-24.21%	+5.43%
Max Drawdown (5Y) Largest decline over 5 years	-24.75%	-24.21%	-0.54%
Max Drawdown (10Y) Largest decline over 10 years	-33.85%	-42.22%	+8.37%
Current Drawdown Current decline from peak	-2.17%	-2.22%	+0.05%
Average Drawdown Average peak-to-trough decline	-10.80%	-8.02%	-2.78%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.09%	2.46%	-0.37%

Volatility

GRISX vs. GMXAX - Volatility Comparison

Nationwide S&P 500 Index Fund (GRISX) and Nationwide Mid Cap Market Index Fund (GMXAX) have volatilities of 3.45% and 3.42%, 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

	GRISX	GMXAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.45%	3.42%	+0.03%
Volatility (6M) Calculated over the trailing 6-month period	10.09%	11.54%	-1.45%
Volatility (1Y) Calculated over the trailing 1-year period	12.87%	15.65%	-2.78%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.05%	19.63%	-2.58%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.08%	21.26%	-3.18%

GRISX vs. GMXAX - Expense Ratio Comparison

GRISX has a 0.44% expense ratio, which is lower than GMXAX's 0.68% expense ratio.

Dividends

GRISX vs. GMXAX - Dividend Comparison

GRISX's dividend yield for the trailing twelve months is around 4.70%, less than GMXAX's 11.33% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
GMXAX Nationwide Mid Cap Market Index Fund	11.33%	12.93%	11.73%	6.17%	9.58%	12.52%	3.18%	5.18%	23.21%	0.85%	9.60%	13.94%
GRISX Nationwide S&P 500 Index Fund	4.70%	5.08%	2.62%	0.79%	1.67%	4.96%	1.27%	6.26%	18.54%	6.66%	7.42%	11.98%

Frequently Asked Questions

Can I hold both GRISX and GMXAX in my portfolio?

GRISX and GMXAX have a correlation of 0.76, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, GRISX or GMXAX?

GRISX has higher volatility (3.45%) compared to GMXAX (3.42%). In terms of maximum drawdown, GRISX dropped -55.53% vs GMXAX's -55.64%.

Which has better risk-adjusted returns?

GRISX currently has the higher Sharpe Ratio (1.39 vs 1.23), 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.