GGBFX vs. GMDYX

Last updated Jun 5, 2026

GGBFX (GuideStone Funds Global Bond Fund) and GMDYX (GuideStone Funds Medium-Duration Bond Fund) are both mutual funds - GGBFX is a Global Bonds fund managed by GuideStone Funds, while GMDYX is a Intermediate Core-Plus Bond fund managed by GuideStone Funds. Over the past 10 years, GGBFX returned 1.72%/yr vs 1.84%/yr for GMDYX. A 0.62 correlation means they provide meaningful diversification when combined. GGBFX charges 0.86%/yr vs 0.39%/yr for GMDYX.

Performance

GGBFX vs. GMDYX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in GuideStone Funds Global Bond Fund (GGBFX) and GuideStone Funds Medium-Duration Bond Fund (GMDYX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, GGBFX achieves a 0.03% return, which is significantly lower than GMDYX's 0.10% return. Over the past 10 years, GGBFX has underperformed GMDYX with an annualized return of 1.72%, while GMDYX has yielded a comparatively higher 1.84% annualized return.

GGBFX

• 1D: -0.34%
• 1M: 0.05%
• YTD: 0.03%
• 6M: 0.49%
• 1Y: 3.22%
• 3Y*: 4.26%
• 5Y*: -0.64%
• 10Y*: 1.72%

GMDYX

• 1D: -0.23%
• 1M: 0.17%
• YTD: 0.10%
• 6M: 0.46%
• 1Y: 5.33%
• 3Y*: 4.63%
• 5Y*: 0.01%
• 10Y*: 1.84%

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

GGBFX vs. GMDYX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
GGBFX GuideStone Funds Global Bond Fund	0.03%	7.55%	0.40%	5.77%	-13.90%	-2.57%	5.03%	11.04%	-4.74%	7.69%
GMDYX GuideStone Funds Medium-Duration Bond Fund	0.10%	8.23%	1.86%	6.28%	-14.96%	-2.16%	9.18%	9.81%	-0.39%	4.11%

Correlation

The correlation between GGBFX and GMDYX is 0.82, 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	0.82
Correlation (3Y) Calculated over the trailing 3-year period	0.88
Correlation (5Y) Calculated over the trailing 5-year period	0.85
Correlation (10Y) Calculated over the trailing 10-year period	0.74
Correlation (All Time) Calculated using the full available price history since Jan 4, 2007	0.62

Over the past year, GGBFX and GMDYX have become more correlated (0.82) than their long-term average of 0.62, meaning their price movements have been converging.

Return for Risk

GGBFX vs. GMDYX — Risk / Return Rank

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

GGBFX

GGBFX Risk / Return Rank: 11
GGBFX Sharpe Ratio Rank: 12
GGBFX Sortino Ratio Rank: 12
GGBFX Omega Ratio Rank: 12
GGBFX Calmar Ratio Rank: 11
GGBFX Martin Ratio Rank: 11

GMDYX

GMDYX Risk / Return Rank: 30
GMDYX Sharpe Ratio Rank: 31
GMDYX Sortino Ratio Rank: 32
GMDYX Omega Ratio Rank: 31
GMDYX Calmar Ratio Rank: 31
GMDYX Martin Ratio Rank: 26

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.

GGBFX vs. GMDYX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for GuideStone Funds Global Bond Fund (GGBFX) and GuideStone Funds Medium-Duration Bond Fund (GMDYX). 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.

	GGBFX	GMDYX	Difference
Sharpe ratio: Return per unit of total volatility	0.91	1.53	-0.62
Sortino ratio: Return per unit of downside risk	1.33	2.27	-0.94
Omega ratio: Gain probability vs. loss probability	1.16	1.28	-0.11
Calmar ratio: Return relative to maximum drawdown	0.98	2.02	-1.04
Martin ratio: Return relative to average drawdown	3.09	6.14	-3.05
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

GGBFX vs. GMDYX - Sharpe Ratio Comparison

The current GGBFX Sharpe Ratio is 0.91, which is lower than the GMDYX Sharpe Ratio of 1.53. The chart below compares the historical Sharpe Ratios of GGBFX and GMDYX, 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

	GGBFX	GMDYX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.91	1.53	-0.62
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.13	0.00	-0.13
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.38	0.37	+0.01
Sharpe Ratio (All Time) Calculated using the full available price history	0.70	0.16	+0.54

Drawdowns

GGBFX vs. GMDYX - Drawdown Comparison

The maximum GGBFX drawdown since its inception was -27.03%, which is greater than GMDYX's maximum drawdown of -23.08%. Use the drawdown chart below to compare losses from any high point for GGBFX and GMDYX.

Drawdown Indicators

	GGBFX	GMDYX	Difference
Max Drawdown Largest peak-to-trough decline	-27.03%	-23.08%	-3.95%
Max Drawdown (1Y) Largest decline over 1 year	-3.80%	-2.94%	-0.86%
Max Drawdown (3Y) Largest decline over 3 years	-6.01%	-6.60%	+0.59%
Max Drawdown (5Y) Largest decline over 5 years	-20.84%	-20.30%	-0.54%
Max Drawdown (10Y) Largest decline over 10 years	-20.97%	-20.75%	-0.22%
Current Drawdown Current decline from peak	-4.18%	-2.43%	-1.75%
Average Drawdown Average peak-to-trough decline	-4.64%	-6.74%	+2.10%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.20%	0.97%	+0.23%

Volatility

GGBFX vs. GMDYX - Volatility Comparison

GuideStone Funds Global Bond Fund (GGBFX) has a higher volatility of 1.53% compared to GuideStone Funds Medium-Duration Bond Fund (GMDYX) at 1.42%. This indicates that GGBFX's price experiences larger fluctuations and is considered to be riskier than GMDYX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	GGBFX	GMDYX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.53%	1.42%	+0.11%
Volatility (6M) Calculated over the trailing 6-month period	3.16%	2.88%	+0.28%
Volatility (1Y) Calculated over the trailing 1-year period	4.08%	3.88%	+0.20%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	4.97%	5.95%	-0.98%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.51%	4.95%	-0.44%

GGBFX vs. GMDYX - Expense Ratio Comparison

GGBFX has a 0.86% expense ratio, which is higher than GMDYX's 0.39% expense ratio.

Dividends

GGBFX vs. GMDYX - Dividend Comparison

GGBFX's dividend yield for the trailing twelve months is around 3.06%, less than GMDYX's 4.44% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
GGBFX GuideStone Funds Global Bond Fund	3.06%	3.05%	2.88%	1.10%	0.95%	3.55%	1.44%	3.29%	3.13%	3.45%	3.96%	4.01%
GMDYX GuideStone Funds Medium-Duration Bond Fund	4.44%	4.53%	4.67%	3.56%	1.87%	1.87%	4.82%	4.09%	2.78%	2.11%	2.09%	3.25%

Frequently Asked Questions

Can I hold both GGBFX and GMDYX in my portfolio?

GGBFX and GMDYX have a correlation of 0.82, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, GGBFX or GMDYX?

GGBFX has higher volatility (1.53%) compared to GMDYX (1.42%). In terms of maximum drawdown, GGBFX dropped -27.03% vs GMDYX's -23.08%.

Which has better risk-adjusted returns?

GMDYX currently has the higher Sharpe Ratio (1.53 vs 0.91), 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.