GIOTX vs. BRK-B

Last updated Jun 3, 2026

GIOTX (GMO International Developed Equity Allocation Fund) is Foreign Large Cap Equities fund managed by GMO, while BRK-B (Berkshire Hathaway Inc.) is a stock. Over the past 10 years, GIOTX returned 11.85%/yr vs 12.82%/yr for BRK-B. A 0.54 correlation means they provide meaningful diversification when combined.

Performance

GIOTX vs. BRK-B - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in GMO International Developed Equity Allocation Fund (GIOTX) and Berkshire Hathaway Inc. (BRK-B). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, GIOTX achieves a 17.75% return, which is significantly higher than BRK-B's -6.20% return. Over the past 10 years, GIOTX has underperformed BRK-B with an annualized return of 11.85%, while BRK-B has yielded a comparatively higher 12.82% annualized return.

GIOTX

• 1D: -0.33%
• 1M: 3.94%
• YTD: 17.75%
• 6M: 21.21%
• 1Y: 39.91%
• 3Y*: 28.02%
• 5Y*: 13.74%
• 10Y*: 11.85%

BRK-B

• 1D: 0.26%
• 1M: -0.32%
• YTD: -6.20%
• 6M: -6.94%
• 1Y: -6.23%
• 3Y*: 12.69%
• 5Y*: 10.06%
• 10Y*: 12.82%

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

GIOTX vs. BRK-B - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
GIOTX GMO International Developed Equity Allocation Fund	17.75%	43.70%	10.66%	21.03%	-12.41%	11.14%	7.43%	24.45%	-19.66%	26.38%
BRK-B Berkshire Hathaway Inc.	-6.20%	10.89%	27.09%	15.46%	3.31%	28.95%	2.37%	10.93%	3.01%	21.62%

Correlation

The correlation between GIOTX and BRK-B is 0.21, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.21
Correlation (3Y) Calculated over the trailing 3-year period	0.32
Correlation (5Y) Calculated over the trailing 5-year period	0.46
Correlation (10Y) Calculated over the trailing 10-year period	0.53
Correlation (All Time) Calculated using the full available price history since Jan 4, 2007	0.54

Over the past year, the correlation between GIOTX and BRK-B has dropped to 0.21 - well below their long-term average of 0.54, suggesting their price drivers have been diverging.

Return for Risk

GIOTX vs. BRK-B — Risk / Return Rank

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

GIOTX

GIOTX Risk / Return Rank: 81
GIOTX Sharpe Ratio Rank: 85
GIOTX Sortino Ratio Rank: 79
GIOTX Omega Ratio Rank: 76
GIOTX Calmar Ratio Rank: 84
GIOTX Martin Ratio Rank: 82

BRK-B

BRK-B Risk / Return Rank: 17
BRK-B Sharpe Ratio Rank: 21
BRK-B Sortino Ratio Rank: 19
BRK-B Omega Ratio Rank: 19
BRK-B Calmar Ratio Rank: 15
BRK-B Martin Ratio Rank: 8

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.

GIOTX vs. BRK-B - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for GMO International Developed Equity Allocation Fund (GIOTX) and Berkshire Hathaway Inc. (BRK-B). 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.

	GIOTX	BRK-B	Difference
Sharpe ratio Return per unit of total volatility	2.73	-0.44	+3.17
Sortino ratio Return per unit of downside risk	3.77	-0.51	+4.28
Omega ratio Gain probability vs. loss probability	1.50	0.94	+0.56
Calmar ratio Return relative to maximum drawdown	3.91	-0.68	+4.59
Martin ratio Return relative to average drawdown	15.42	-1.36	+16.78
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

GIOTX vs. BRK-B - Sharpe Ratio Comparison

The current GIOTX Sharpe Ratio is 2.73, which is higher than the BRK-B Sharpe Ratio of -0.44. The chart below compares the historical Sharpe Ratios of GIOTX and BRK-B, 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

	GIOTX	BRK-B	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.73	-0.44	+3.17
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.90	0.59	+0.31
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.73	0.66	+0.07
Sharpe Ratio (All Time) Calculated using the full available price history	0.34	0.48	-0.14

Drawdowns

GIOTX vs. BRK-B - Drawdown Comparison

The maximum GIOTX drawdown since its inception was -56.51%, roughly equal to the maximum BRK-B drawdown of -53.86%. Use the drawdown chart below to compare losses from any high point for GIOTX and BRK-B.

Drawdown Indicators

	GIOTX	BRK-B	Difference
Max Drawdown Largest peak-to-trough decline	-56.51%	-53.86%	-2.65%
Max Drawdown (1Y) Largest decline over 1 year	-10.66%	-9.42%	-1.24%
Max Drawdown (3Y) Largest decline over 3 years	-13.40%	-14.95%	+1.55%
Max Drawdown (5Y) Largest decline over 5 years	-29.68%	-26.58%	-3.10%
Max Drawdown (10Y) Largest decline over 10 years	-39.29%	-29.57%	-9.72%
Current Drawdown Current decline from peak	-0.41%	-12.65%	+12.24%
Average Drawdown Average peak-to-trough decline	-14.24%	-11.07%	-3.17%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.70%	4.73%	-2.03%

Volatility

GIOTX vs. BRK-B - Volatility Comparison

GMO International Developed Equity Allocation Fund (GIOTX) has a higher volatility of 4.50% compared to Berkshire Hathaway Inc. (BRK-B) at 3.79%. This indicates that GIOTX's price experiences larger fluctuations and is considered to be riskier than BRK-B based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	GIOTX	BRK-B	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.50%	3.79%	+0.71%
Volatility (6M) Calculated over the trailing 6-month period	11.98%	10.68%	+1.30%
Volatility (1Y) Calculated over the trailing 1-year period	15.25%	14.31%	+0.94%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	15.38%	17.11%	-1.73%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	16.34%	19.43%	-3.09%

Dividends

GIOTX vs. BRK-B - Dividend Comparison

GIOTX's dividend yield for the trailing twelve months is around 6.83%, while BRK-B has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BRK-B Berkshire Hathaway Inc.	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
GIOTX GMO International Developed Equity Allocation Fund	6.83%	8.04%	5.07%	6.54%	4.45%	6.67%	4.48%	3.74%	3.90%	3.15%	4.04%	3.39%

Frequently Asked Questions

Can I hold both GIOTX and BRK-B in my portfolio?

GIOTX and BRK-B have a correlation of 0.21, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, GIOTX or BRK-B?

GIOTX has higher volatility (4.50%) compared to BRK-B (3.79%). In terms of maximum drawdown, GIOTX dropped -56.51% vs BRK-B's -53.86%.

Which has better risk-adjusted returns?

GIOTX currently has the higher Sharpe Ratio (2.73 vs -0.44), 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.