GMODX vs. GABFX

Last updated Jun 26, 2026

GMODX (GMO Opportunistic Income Fund) and GABFX (GMO Asset Allocation Bond Fund) are both mutual funds - GMODX is a Nontraditional Bonds fund managed by GMO, while GABFX is a Inflation-Protected Bonds fund managed by GMO. Over the past 10 years, GMODX returned 4.27%/yr vs 0.51%/yr for GABFX. A 0.54 correlation means they provide meaningful diversification when combined. GMODX charges 0.47%/yr vs 0.32%/yr for GABFX.

Performance

GMODX vs. GABFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in GMO Opportunistic Income Fund (GMODX) and GMO Asset Allocation Bond Fund (GABFX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, GMODX achieves a 1.31% return, which is significantly higher than GABFX's -3.48% return. Over the past 10 years, GMODX has outperformed GABFX with an annualized return of 4.27%, while GABFX has yielded a comparatively lower 0.51% annualized return.

GMODX

• 1D: 0.17%
• 1M: 0.24%
• YTD: 1.31%
• 6M: 1.36%
• 1Y: 4.32%
• 3Y*: 5.86%
• 5Y*: 3.86%
• 10Y*: 4.27%

GABFX

• 1D: 1.18%
• 1M: 1.12%
• YTD: -3.48%
• 6M: -3.69%
• 1Y: -0.23%
• 3Y*: -1.26%
• 5Y*: -3.20%
• 10Y*: 0.51%

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

GMODX vs. GABFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
GMODX GMO Opportunistic Income Fund	1.31%	6.47%	6.11%	7.07%	-2.09%	2.83%	3.34%	3.83%	4.01%	6.41%
GABFX GMO Asset Allocation Bond Fund	-3.48%	8.82%	-12.60%	8.33%	-14.86%	1.34%	11.28%	8.00%	0.78%	2.41%

Correlation

The correlation between GMODX and GABFX is 0.85, 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	0.85
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	0.68
Correlation (All Time) Calculated using the full available price history since Jan 3, 2012	0.54

Over the past year, GMODX and GABFX have become more correlated (0.85) than their long-term average of 0.54, meaning their price movements have been converging.

Return for Risk

GMODX vs. GABFX — Risk / Return Rank

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

GMODX

GMODX Risk / Return Rank: 97
GMODX Sharpe Ratio Rank: 98
GMODX Sortino Ratio Rank: 98
GMODX Omega Ratio Rank: 95
GMODX Calmar Ratio Rank: 98
GMODX Martin Ratio Rank: 98

GABFX

GABFX Risk / Return Rank: 3
GABFX Sharpe Ratio Rank: 3
GABFX Sortino Ratio Rank: 3
GABFX Omega Ratio Rank: 3
GABFX Calmar Ratio Rank: 3
GABFX Martin Ratio Rank: 3

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.

GMODX vs. GABFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for GMO Opportunistic Income Fund (GMODX) and GMO Asset Allocation Bond Fund (GABFX). 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.

	GMODX	GABFX	Difference
Sharpe ratio: Return per unit of total volatility	3.31	-0.02	+3.33
Sortino ratio: Return per unit of downside risk	5.83	0.04	+5.79
Omega ratio: Gain probability vs. loss probability	1.71	1.00	+0.71
Calmar ratio: Return relative to maximum drawdown	6.71	-0.02	+6.73
Martin ratio: Return relative to average drawdown	28.02	-0.06	+28.08

GMODX vs. GABFX - Sharpe Ratio Comparison

The current GMODX Sharpe Ratio is 3.31, which is higher than the GABFX Sharpe Ratio of -0.02. The chart below compares the historical Sharpe Ratios of GMODX and GABFX, 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

GMODX vs. GABFX - Drawdown Comparison

The maximum GMODX drawdown since its inception was -8.79%, smaller than the maximum GABFX drawdown of -27.84%. Use the drawdown chart below to compare losses from any high point for GMODX and GABFX.

Drawdown Indicators

	GMODX	GABFX	Difference
Max Drawdown Largest peak-to-trough decline	-8.79%	-27.84%	+19.05%
Max Drawdown (1Y) Largest decline over 1 year	-0.65%	-9.58%	+8.93%
Max Drawdown (3Y) Largest decline over 3 years	-4.97%	-19.48%	+14.51%
Max Drawdown (5Y) Largest decline over 5 years	-5.79%	-27.84%	+22.05%
Max Drawdown (10Y) Largest decline over 10 years	-8.79%	-27.84%	+19.05%
Current Drawdown Current decline from peak	0.00%	-17.38%	+17.38%
Average Drawdown Average peak-to-trough decline	-0.70%	-7.34%	+6.64%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.16%	3.97%	-3.81%

Volatility

GMODX vs. GABFX - Volatility Comparison

The current volatility for GMO Opportunistic Income Fund (GMODX) is 0.44%, while GMO Asset Allocation Bond Fund (GABFX) has a volatility of 2.57%. This indicates that GMODX experiences smaller price fluctuations and is considered to be less risky than GABFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	GMODX	GABFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.44%	2.57%	-2.13%
Volatility (6M) Calculated over the trailing 6-month period	0.96%	6.68%	-5.72%
Volatility (1Y) Calculated over the trailing 1-year period	1.33%	10.23%	-8.90%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	3.83%	14.04%	-10.21%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	3.04%	10.37%	-7.33%

GMODX vs. GABFX - Expense Ratio Comparison

GMODX has a 0.47% expense ratio, which is higher than GABFX's 0.32% expense ratio.

Dividends

GMODX vs. GABFX - Dividend Comparison

GMODX's dividend yield for the trailing twelve months is around 5.00%, more than GABFX's 2.79% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
GABFX GMO Asset Allocation Bond Fund	2.79%	2.69%	4.19%	5.03%	0.71%	1.81%	1.20%	4.72%	5.13%	1.07%	0.00%	7.43%
GMODX GMO Opportunistic Income Fund	5.00%	4.99%	5.28%	6.17%	5.44%	2.10%	4.15%	5.69%	4.35%	2.66%	2.55%	1.71%

Frequently Asked Questions

Can I hold both GMODX and GABFX in my portfolio?

GMODX and GABFX have a correlation of 0.85, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, GMODX or GABFX?

GABFX has higher volatility (2.57%) compared to GMODX (0.44%). In terms of maximum drawdown, GMODX dropped -8.79% vs GABFX's -27.84%.

Which has better risk-adjusted returns?

GMODX currently has the higher Sharpe Ratio (3.31 vs -0.02), 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.