GMXAX vs. GMRAX

Last updated Jun 3, 2026

GMXAX (Nationwide Mid Cap Market Index Fund) and GMRAX (Nationwide Small Cap Index Fund) are both mutual funds - GMXAX is a Mid Cap Blend Equities fund managed by Nationwide, while GMRAX is a Small Cap Blend Equities fund managed by Nationwide. Over the past 10 years, GMXAX returned 9.33%/yr vs 10.58%/yr for GMRAX. With a 0.95 correlation, they move nearly in lockstep. Both charge a 0.68% expense ratio.

Performance

GMXAX vs. GMRAX - Performance Comparison

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

Returns By Period

In the year-to-date period, GMXAX achieves a 12.95% return, which is significantly lower than GMRAX's 17.34% return. Over the past 10 years, GMXAX has underperformed GMRAX with an annualized return of 9.33%, while GMRAX has yielded a comparatively higher 10.58% annualized return.

GMXAX

• 1D: -0.06%
• 1M: 2.36%
• YTD: 12.95%
• 6M: 14.04%
• 1Y: 25.41%
• 3Y*: 14.85%
• 5Y*: 7.33%
• 10Y*: 9.33%

GMRAX

• 1D: -0.46%
• 1M: 3.43%
• YTD: 17.34%
• 6M: 18.34%
• 1Y: 41.51%
• 3Y*: 17.37%
• 5Y*: 5.61%
• 10Y*: 10.58%

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

GMXAX vs. GMRAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
GMXAX Nationwide Mid Cap Market Index Fund	12.95%	6.84%	12.15%	15.89%	-13.45%	24.33%	12.79%	25.35%	-10.65%	2.80%
GMRAX Nationwide Small Cap Index Fund	17.34%	12.26%	9.12%	17.56%	-20.82%	14.27%	19.59%	24.87%	-10.71%	14.21%

Correlation

The correlation between GMXAX and GMRAX is 0.92, 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	0.92
Correlation (3Y) Calculated over the trailing 3-year period	0.94
Correlation (5Y) Calculated over the trailing 5-year period	0.95
Correlation (10Y) Calculated over the trailing 10-year period	0.95
Correlation (All Time) Calculated using the full available price history since Jan 4, 2000	0.95

The correlation between GMXAX and GMRAX has been stable across timeframes, ranging from 0.92 to 0.95 - a consistent structural relationship.

Return for Risk

GMXAX vs. GMRAX — Risk / Return Rank

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

GMXAX

GMXAX Risk / Return Rank: 39
GMXAX Sharpe Ratio Rank: 32
GMXAX Sortino Ratio Rank: 32
GMXAX Omega Ratio Rank: 30
GMXAX Calmar Ratio Rank: 53
GMXAX Martin Ratio Rank: 49

GMRAX

GMRAX Risk / Return Rank: 60
GMRAX Sharpe Ratio Rank: 55
GMRAX Sortino Ratio Rank: 52
GMRAX Omega Ratio Rank: 44
GMRAX Calmar Ratio Rank: 81
GMRAX Martin Ratio Rank: 68

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.

GMXAX vs. GMRAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Nationwide Mid Cap Market Index Fund (GMXAX) and Nationwide Small Cap Index Fund (GMRAX). 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.

	GMXAX	GMRAX	Difference
Sharpe ratio Return per unit of total volatility	1.64	2.19	-0.56
Sortino ratio Return per unit of downside risk	2.39	3.03	-0.64
Omega ratio Gain probability vs. loss probability	1.29	1.36	-0.07
Calmar ratio Return relative to maximum drawdown	2.80	3.72	-0.92
Martin ratio Return relative to average drawdown	10.16	13.19	-3.03
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

GMXAX vs. GMRAX - Sharpe Ratio Comparison

The current GMXAX Sharpe Ratio is 1.64, which is comparable to the GMRAX Sharpe Ratio of 2.19. The chart below compares the historical Sharpe Ratios of GMXAX and GMRAX, 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

	GMXAX	GMRAX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.64	2.19	-0.56
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.37	0.25	+0.12
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.44	0.45	-0.01
Sharpe Ratio (All Time) Calculated using the full available price history	0.40	0.32	+0.09

Drawdowns

GMXAX vs. GMRAX - Drawdown Comparison

The maximum GMXAX drawdown since its inception was -55.64%, smaller than the maximum GMRAX drawdown of -59.36%. Use the drawdown chart below to compare losses from any high point for GMXAX and GMRAX.

Drawdown Indicators

	GMXAX	GMRAX	Difference
Max Drawdown Largest peak-to-trough decline	-55.64%	-59.36%	+3.72%
Max Drawdown (1Y) Largest decline over 1 year	-8.83%	-11.06%	+2.23%
Max Drawdown (3Y) Largest decline over 3 years	-24.21%	-27.67%	+3.46%
Max Drawdown (5Y) Largest decline over 5 years	-24.21%	-32.00%	+7.79%
Max Drawdown (10Y) Largest decline over 10 years	-42.22%	-41.78%	-0.44%
Current Drawdown Current decline from peak	-0.18%	-0.99%	+0.81%
Average Drawdown Average peak-to-trough decline	-8.06%	-12.60%	+4.54%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.43%	3.12%	-0.69%

Volatility

GMXAX vs. GMRAX - Volatility Comparison

The current volatility for Nationwide Mid Cap Market Index Fund (GMXAX) is 4.35%, while Nationwide Small Cap Index Fund (GMRAX) has a volatility of 5.54%. This indicates that GMXAX experiences smaller price fluctuations and is considered to be less risky than GMRAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	GMXAX	GMRAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.35%	5.54%	-1.19%
Volatility (6M) Calculated over the trailing 6-month period	11.27%	13.58%	-2.31%
Volatility (1Y) Calculated over the trailing 1-year period	15.43%	19.17%	-3.74%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.69%	22.63%	-2.94%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.30%	23.55%	-2.25%

GMXAX vs. GMRAX - Expense Ratio Comparison

Both GMXAX and GMRAX have an expense ratio of 0.68%.

Dividends

GMXAX vs. GMRAX - Dividend Comparison

GMXAX's dividend yield for the trailing twelve months is around 11.54%, more than GMRAX's 2.12% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
GMRAX Nationwide Small Cap Index Fund	2.12%	2.45%	4.99%	0.52%	1.51%	6.81%	0.56%	7.38%	46.93%	17.82%	7.14%	12.55%
GMXAX Nationwide Mid Cap Market Index Fund	11.54%	12.93%	11.73%	6.17%	9.58%	12.52%	3.18%	5.18%	23.21%	0.85%	9.60%	13.94%

Frequently Asked Questions

Can I hold both GMXAX and GMRAX in my portfolio?

With a correlation of 0.92, GMXAX and GMRAX 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, GMXAX or GMRAX?

GMRAX has higher volatility (5.54%) compared to GMXAX (4.35%). In terms of maximum drawdown, GMXAX dropped -55.64% vs GMRAX's -59.36%.

Which has better risk-adjusted returns?

GMRAX currently has the higher Sharpe Ratio (2.19 vs 1.64), 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.