GMFZX vs. FSKAX

Last updated Jun 23, 2026

GMFZX (GuideStone Funds MyDestination 2045 Fund) and FSKAX (Fidelity Total Market Index Fund) are both mutual funds - GMFZX is a Target Retirement Date fund managed by GuideStone Funds, while FSKAX is a Large Cap Blend Equities fund managed by Fidelity. Over the past 10 years, GMFZX returned 10.98%/yr vs 15.04%/yr for FSKAX. Their correlation of 0.95 suggests significant overlap in exposure. GMFZX charges 0.38%/yr vs 0.01%/yr for FSKAX.

Performance

GMFZX vs. FSKAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in GuideStone Funds MyDestination 2045 Fund (GMFZX) and Fidelity Total Market Index Fund (FSKAX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, GMFZX achieves a 10.13% return, which is significantly lower than FSKAX's 10.81% return. Over the past 10 years, GMFZX has underperformed FSKAX with an annualized return of 10.98%, while FSKAX has yielded a comparatively higher 15.04% annualized return.

GMFZX

• 1D: 1.12%
• 1M: 1.54%
• YTD: 10.13%
• 6M: 9.88%
• 1Y: 23.90%
• 3Y*: 16.49%
• 5Y*: 9.31%
• 10Y*: 10.98%

FSKAX

• 1D: 1.15%
• 1M: 0.90%
• YTD: 10.81%
• 6M: 10.02%
• 1Y: 27.57%
• 3Y*: 20.73%
• 5Y*: 12.91%
• 10Y*: 15.04%

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

GMFZX vs. FSKAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
GMFZX GuideStone Funds MyDestination 2045 Fund	10.13%	18.22%	14.21%	18.70%	-17.40%	16.30%	13.82%	24.26%	-7.79%	20.91%
FSKAX Fidelity Total Market Index Fund	10.81%	17.06%	23.89%	26.12%	-19.53%	25.66%	20.79%	30.92%	-5.32%	20.85%

Correlation

The correlation between GMFZX and FSKAX is 0.97 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.97
Correlation (3Y) Calculated over the trailing 3-year period	0.96
Correlation (5Y) Calculated over the trailing 5-year period	0.96
Correlation (10Y) Calculated over the trailing 10-year period	0.94
Correlation (All Time) Calculated using the full available price history since Sep 8, 2011	0.95

The correlation between GMFZX and FSKAX has been stable across timeframes, ranging from 0.94 to 0.97 - a consistent structural relationship.

Return for Risk

GMFZX vs. FSKAX — Risk / Return Rank

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

GMFZX

GMFZX Risk / Return Rank: 59
GMFZX Sharpe Ratio Rank: 58
GMFZX Sortino Ratio Rank: 56
GMFZX Omega Ratio Rank: 57
GMFZX Calmar Ratio Rank: 56
GMFZX Martin Ratio Rank: 67

FSKAX

FSKAX Risk / Return Rank: 65
FSKAX Sharpe Ratio Rank: 62
FSKAX Sortino Ratio Rank: 56
FSKAX Omega Ratio Rank: 57
FSKAX Calmar Ratio Rank: 70
FSKAX Martin Ratio Rank: 79

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.

GMFZX vs. FSKAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for GuideStone Funds MyDestination 2045 Fund (GMFZX) and Fidelity Total Market Index Fund (FSKAX). 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.

	GMFZX	FSKAX	Difference
Sharpe ratio: Return per unit of total volatility	2.07	2.13	-0.06
Sortino ratio: Return per unit of downside risk	2.87	2.88	-0.01
Omega ratio: Gain probability vs. loss probability	1.38	1.38	0.00
Calmar ratio: Return relative to maximum drawdown	2.76	3.08	-0.32
Martin ratio: Return relative to average drawdown	12.12	13.71	-1.59

GMFZX vs. FSKAX - Sharpe Ratio Comparison

The current GMFZX Sharpe Ratio is 2.07, which is comparable to the FSKAX Sharpe Ratio of 2.13. The chart below compares the historical Sharpe Ratios of GMFZX and FSKAX, 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

GMFZX vs. FSKAX - Drawdown Comparison

The maximum GMFZX drawdown since its inception was -60.03%, which is greater than FSKAX's maximum drawdown of -35.01%. Use the drawdown chart below to compare losses from any high point for GMFZX and FSKAX.

Drawdown Indicators

	GMFZX	FSKAX	Difference
Max Drawdown Largest peak-to-trough decline	-60.03%	-35.01%	-25.02%
Max Drawdown (1Y) Largest decline over 1 year	-8.59%	-8.92%	+0.33%
Max Drawdown (3Y) Largest decline over 3 years	-14.13%	-19.43%	+5.30%
Max Drawdown (5Y) Largest decline over 5 years	-24.61%	-25.39%	+0.78%
Max Drawdown (10Y) Largest decline over 10 years	-30.18%	-35.01%	+4.83%
Current Drawdown Current decline from peak	-0.34%	-1.14%	+0.80%
Average Drawdown Average peak-to-trough decline	-9.64%	-4.01%	-5.63%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.95%	2.00%	-0.05%

Volatility

GMFZX vs. FSKAX - Volatility Comparison

The current volatility for GuideStone Funds MyDestination 2045 Fund (GMFZX) is 4.53%, while Fidelity Total Market Index Fund (FSKAX) has a volatility of 4.91%. This indicates that GMFZX experiences smaller price fluctuations and is considered to be less risky than FSKAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	GMFZX	FSKAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.53%	4.91%	-0.38%
Volatility (6M) Calculated over the trailing 6-month period	9.47%	10.16%	-0.69%
Volatility (1Y) Calculated over the trailing 1-year period	11.46%	12.88%	-1.42%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	13.64%	17.51%	-3.87%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	14.45%	18.50%	-4.05%

GMFZX vs. FSKAX - Expense Ratio Comparison

GMFZX has a 0.38% expense ratio, which is higher than FSKAX's 0.02% expense ratio.

Dividends

GMFZX vs. FSKAX - Dividend Comparison

GMFZX's dividend yield for the trailing twelve months is around 4.09%, more than FSKAX's 0.94% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FSKAX Fidelity Total Market Index Fund	0.94%	1.01%	1.19%	1.41%	1.62%	1.15%	1.45%	1.94%	2.54%	2.07%	2.43%	0.82%
GMFZX GuideStone Funds MyDestination 2045 Fund	4.09%	4.50%	5.87%	3.27%	6.81%	5.46%	2.36%	3.33%	7.99%	4.37%	3.97%	19.91%

Frequently Asked Questions

Can I hold both GMFZX and FSKAX in my portfolio?

With a correlation of 0.97, GMFZX and FSKAX 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, GMFZX or FSKAX?

FSKAX has higher volatility (4.91%) compared to GMFZX (4.53%). In terms of maximum drawdown, GMFZX dropped -60.03% vs FSKAX's -35.01%.

Which has better risk-adjusted returns?

FSKAX currently has the higher Sharpe Ratio (2.13 vs 2.07), 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.