GBIAX vs. GMRAX

Last updated Jun 3, 2026

GBIAX (Nationwide Bond Index Fund) and GMRAX (Nationwide Small Cap Index Fund) are both mutual funds - GBIAX is a Intermediate Core Bond fund managed by Nationwide, while GMRAX is a Small Cap Blend Equities fund managed by Nationwide. Over the past 10 years, GBIAX returned 0.87%/yr vs 10.58%/yr for GMRAX. At a correlation of -0.17, they often move in opposite directions. GBIAX charges 0.64%/yr vs 0.68%/yr for GMRAX.

Performance

GBIAX vs. GMRAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Nationwide Bond Index Fund (GBIAX) 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, GBIAX achieves a 0.13% return, which is significantly lower than GMRAX's 17.34% return. Over the past 10 years, GBIAX has underperformed GMRAX with an annualized return of 0.87%, while GMRAX has yielded a comparatively higher 10.58% annualized return.

GBIAX

• 1D: -0.10%
• 1M: 0.08%
• YTD: 0.13%
• 6M: 0.10%
• 1Y: 4.73%
• 3Y*: 3.34%
• 5Y*: -0.60%
• 10Y*: 0.87%

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)

GBIAX vs. GMRAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
GBIAX Nationwide Bond Index Fund	0.13%	6.54%	0.44%	5.03%	-14.06%	-2.38%	6.60%	8.08%	-0.74%	2.89%
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 GBIAX and GMRAX is 0.23, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.23
Correlation (3Y) Calculated over the trailing 3-year period	0.23
Correlation (5Y) Calculated over the trailing 5-year period	0.14
Correlation (10Y) Calculated over the trailing 10-year period	-0.02
Correlation (All Time) Calculated using the full available price history since Jan 4, 2000	-0.17

The correlation between GBIAX and GMRAX shifts across timeframes, from -0.17 (all time) to 0.23 (3 years), reflecting how their relationship changes across market environments.

Return for Risk

GBIAX vs. GMRAX — Risk / Return Rank

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

GBIAX

GBIAX Risk / Return Rank: 16
GBIAX Sharpe Ratio Rank: 15
GBIAX Sortino Ratio Rank: 16
GBIAX Omega Ratio Rank: 15
GBIAX Calmar Ratio Rank: 18
GBIAX Martin Ratio Rank: 17

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.

GBIAX vs. GMRAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Nationwide Bond Index Fund (GBIAX) 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.

	GBIAX	GMRAX	Difference
Sharpe ratio Return per unit of total volatility	1.13	2.19	-1.07
Sortino ratio Return per unit of downside risk	1.67	3.03	-1.36
Omega ratio Gain probability vs. loss probability	1.20	1.36	-0.16
Calmar ratio Return relative to maximum drawdown	1.60	3.72	-2.12
Martin ratio Return relative to average drawdown	4.77	13.19	-8.42
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

GBIAX vs. GMRAX - Sharpe Ratio Comparison

The current GBIAX Sharpe Ratio is 1.13, which is lower than the GMRAX Sharpe Ratio of 2.19. The chart below compares the historical Sharpe Ratios of GBIAX 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

	GBIAX	GMRAX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.13	2.19	-1.07
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.10	0.25	-0.35
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.18	0.45	-0.27
Sharpe Ratio (All Time) Calculated using the full available price history	0.73	0.32	+0.42

Drawdowns

GBIAX vs. GMRAX - Drawdown Comparison

The maximum GBIAX drawdown since its inception was -20.26%, smaller than the maximum GMRAX drawdown of -59.36%. Use the drawdown chart below to compare losses from any high point for GBIAX and GMRAX.

Drawdown Indicators

	GBIAX	GMRAX	Difference
Max Drawdown Largest peak-to-trough decline	-20.26%	-59.36%	+39.10%
Max Drawdown (1Y) Largest decline over 1 year	-3.00%	-11.06%	+8.06%
Max Drawdown (3Y) Largest decline over 3 years	-6.30%	-27.67%	+21.37%
Max Drawdown (5Y) Largest decline over 5 years	-19.07%	-32.00%	+12.93%
Max Drawdown (10Y) Largest decline over 10 years	-20.26%	-41.78%	+21.52%
Current Drawdown Current decline from peak	-6.27%	-0.99%	-5.28%
Average Drawdown Average peak-to-trough decline	-3.04%	-12.60%	+9.56%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.01%	3.12%	-2.11%

Volatility

GBIAX vs. GMRAX - Volatility Comparison

The current volatility for Nationwide Bond Index Fund (GBIAX) is 1.30%, while Nationwide Small Cap Index Fund (GMRAX) has a volatility of 5.54%. This indicates that GBIAX 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

	GBIAX	GMRAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.30%	5.54%	-4.24%
Volatility (6M) Calculated over the trailing 6-month period	2.77%	13.58%	-10.81%
Volatility (1Y) Calculated over the trailing 1-year period	3.93%	19.17%	-15.24%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	6.00%	22.63%	-16.63%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.95%	23.55%	-18.60%

GBIAX vs. GMRAX - Expense Ratio Comparison

GBIAX has a 0.64% expense ratio, which is lower than GMRAX's 0.68% expense ratio.

Dividends

GBIAX vs. GMRAX - Dividend Comparison

GBIAX's dividend yield for the trailing twelve months is around 3.29%, more than GMRAX's 2.12% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
GBIAX Nationwide Bond Index Fund	3.29%	3.18%	3.07%	2.57%	1.59%	3.02%	1.79%	2.27%	2.29%	1.93%	2.15%	2.43%
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%

Frequently Asked Questions

Can I hold both GBIAX and GMRAX in my portfolio?

GBIAX and GMRAX have a correlation of 0.23, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, GBIAX or GMRAX?

GMRAX has higher volatility (5.54%) compared to GBIAX (1.30%). In terms of maximum drawdown, GBIAX dropped -20.26% vs GMRAX's -59.36%.

Which has better risk-adjusted returns?

GMRAX currently has the higher Sharpe Ratio (2.19 vs 1.13), 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.