GBLAX vs. GIMFX

Last updated Jun 5, 2026

GBLAX (American Funds Global Balanced Fund Class A) and GIMFX (GMO Implementation Fund) are both Global Allocation funds. Over the past 10 years, GBLAX returned 7.02%/yr vs 7.25%/yr for GIMFX. A 0.77 correlation means they provide meaningful diversification when combined. GBLAX charges 0.80%/yr vs 0.02%/yr for GIMFX.

Performance

GBLAX vs. GIMFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Funds Global Balanced Fund Class A (GBLAX) and GMO Implementation Fund (GIMFX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, GBLAX achieves a 6.41% return, which is significantly lower than GIMFX's 14.03% return. Both investments have delivered pretty close results over the past 10 years, with GBLAX having a 7.02% annualized return and GIMFX not far ahead at 7.25%.

GBLAX

• 1D: -0.54%
• 1M: 2.01%
• YTD: 6.41%
• 6M: 6.73%
• 1Y: 16.71%
• 3Y*: 12.67%
• 5Y*: 5.87%
• 10Y*: 7.02%

GIMFX

• 1D: -0.11%
• 1M: 3.19%
• YTD: 14.03%
• 6M: 16.16%
• 1Y: 32.28%
• 3Y*: 17.70%
• 5Y*: 9.49%
• 10Y*: 7.25%

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

GBLAX vs. GIMFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
GBLAX American Funds Global Balanced Fund Class A	6.41%	17.12%	6.56%	13.68%	-14.25%	9.18%	10.47%	17.26%	-6.13%	13.99%
GIMFX GMO Implementation Fund	14.03%	25.37%	2.67%	14.75%	-1.24%	4.05%	-7.25%	13.24%	-5.58%	14.09%

Correlation

The correlation between GBLAX and GIMFX is 0.79, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.79
Correlation (3Y) Calculated over the trailing 3-year period	0.77
Correlation (5Y) Calculated over the trailing 5-year period	0.70
Correlation (10Y) Calculated over the trailing 10-year period	0.75
Correlation (All Time) Calculated using the full available price history since Jan 3, 2013	0.77

The correlation between GBLAX and GIMFX has been stable across timeframes, ranging from 0.70 to 0.79 - a consistent structural relationship.

Return for Risk

GBLAX vs. GIMFX — Risk / Return Rank

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

GBLAX

GBLAX Risk / Return Rank: 54
GBLAX Sharpe Ratio Rank: 54
GBLAX Sortino Ratio Rank: 54
GBLAX Omega Ratio Rank: 56
GBLAX Calmar Ratio Rank: 48
GBLAX Martin Ratio Rank: 58

GIMFX

GIMFX Risk / Return Rank: 95
GIMFX Sharpe Ratio Rank: 99
GIMFX Sortino Ratio Rank: 97
GIMFX Omega Ratio Rank: 96
GIMFX Calmar Ratio Rank: 92
GIMFX Martin Ratio Rank: 93

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.

GBLAX vs. GIMFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Funds Global Balanced Fund Class A (GBLAX) and GMO Implementation Fund (GIMFX). 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.

	GBLAX	GIMFX	Difference
Sharpe ratio: Return per unit of total volatility	2.09	4.13	-2.04
Sortino ratio: Return per unit of downside risk	2.99	5.84	-2.85
Omega ratio: Gain probability vs. loss probability	1.40	1.83	-0.44
Calmar ratio: Return relative to maximum drawdown	2.54	5.01	-2.46
Martin ratio: Return relative to average drawdown	11.18	19.44	-8.26
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

GBLAX vs. GIMFX - Sharpe Ratio Comparison

The current GBLAX Sharpe Ratio is 2.09, which is lower than the GIMFX Sharpe Ratio of 4.13. The chart below compares the historical Sharpe Ratios of GBLAX and GIMFX, 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

	GBLAX	GIMFX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.09	4.13	-2.04
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.60	1.11	-0.52
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.67	0.81	-0.14
Sharpe Ratio (All Time) Calculated using the full available price history	0.66	0.70	-0.05

Drawdowns

GBLAX vs. GIMFX - Drawdown Comparison

The maximum GBLAX drawdown since its inception was -23.36%, smaller than the maximum GIMFX drawdown of -25.87%. Use the drawdown chart below to compare losses from any high point for GBLAX and GIMFX.

Drawdown Indicators

	GBLAX	GIMFX	Difference
Max Drawdown Largest peak-to-trough decline	-23.36%	-25.87%	+2.51%
Max Drawdown (1Y) Largest decline over 1 year	-6.74%	-6.53%	-0.21%
Max Drawdown (3Y) Largest decline over 3 years	-8.90%	-8.02%	-0.88%
Max Drawdown (5Y) Largest decline over 5 years	-22.55%	-14.02%	-8.53%
Max Drawdown (10Y) Largest decline over 10 years	-23.36%	-25.87%	+2.51%
Current Drawdown Current decline from peak	-0.54%	-0.11%	-0.43%
Average Drawdown Average peak-to-trough decline	-3.69%	-4.29%	+0.60%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.53%	1.68%	-0.15%

Volatility

GBLAX vs. GIMFX - Volatility Comparison

American Funds Global Balanced Fund Class A (GBLAX) and GMO Implementation Fund (GIMFX) have volatilities of 2.77% and 2.78%, 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

	GBLAX	GIMFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.77%	2.78%	-0.01%
Volatility (6M) Calculated over the trailing 6-month period	6.79%	6.21%	+0.58%
Volatility (1Y) Calculated over the trailing 1-year period	8.21%	7.92%	+0.29%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	9.91%	8.58%	+1.33%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	10.45%	8.98%	+1.47%

GBLAX vs. GIMFX - Expense Ratio Comparison

GBLAX has a 0.80% expense ratio, which is higher than GIMFX's 0.02% expense ratio.

Dividends

GBLAX vs. GIMFX - Dividend Comparison

GBLAX's dividend yield for the trailing twelve months is around 5.99%, more than GIMFX's 3.75% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
GBLAX American Funds Global Balanced Fund Class A	5.99%	6.34%	5.53%	1.61%	1.52%	6.02%	1.24%	1.87%	2.30%	3.15%	2.00%	3.28%
GIMFX GMO Implementation Fund	3.75%	4.28%	3.39%	5.93%	3.59%	3.28%	2.25%	3.99%	4.59%	2.95%	1.98%	0.00%

Frequently Asked Questions

Can I hold both GBLAX and GIMFX in my portfolio?

GBLAX and GIMFX have a correlation of 0.79, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, GBLAX or GIMFX?

GIMFX has higher volatility (2.78%) compared to GBLAX (2.77%). In terms of maximum drawdown, GBLAX dropped -23.36% vs GIMFX's -25.87%.

Which has better risk-adjusted returns?

GIMFX currently has the higher Sharpe Ratio (4.13 vs 2.09), 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.