BTLSX vs. FAOSX

Last updated Jun 4, 2026

BTLSX (Baillie Gifford International Concentrated Growth Equities Fund) and FAOSX (Fidelity Advisor Overseas Fund Class Z) are both Foreign Large Cap Equities funds. Over the past 5 years, BTLSX returned -2.46%/yr vs 3.79%/yr for FAOSX. A 0.76 correlation means they provide meaningful diversification when combined. BTLSX charges 0.81%/yr vs 1.02%/yr for FAOSX.

Performance

BTLSX vs. FAOSX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Baillie Gifford International Concentrated Growth Equities Fund (BTLSX) and Fidelity Advisor Overseas Fund Class Z (FAOSX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

BTLSX

• 1D: 0.00%
• 1M: -2.51%
• YTD: -7.50%
• 6M: -7.50%
• 1Y: -8.44%
• 3Y*: 8.52%
• 5Y*: -2.46%
• 10Y*: —

FAOSX

• 1D: 0.00%
• 1M: 0.00%
• YTD: 0.00%
• 6M: 0.00%
• 1Y: -1.63%
• 3Y*: 8.88%
• 5Y*: 3.79%
• 10Y*: —

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

BTLSX vs. FAOSX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
BTLSX Baillie Gifford International Concentrated Growth Equities Fund	-7.50%	16.56%	18.34%	14.75%	-39.64%	0.71%	100.15%	45.32%	-13.23%	-0.69%
FAOSX Fidelity Advisor Overseas Fund Class Z	0.00%	15.36%	5.06%	20.52%	-24.31%	19.42%	15.17%	27.96%	-14.73%	0.92%

Correlation

The correlation between BTLSX and FAOSX is 0.45, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.45
Correlation (3Y) Calculated over the trailing 3-year period	0.69
Correlation (5Y) Calculated over the trailing 5-year period	0.74
Correlation (All Time) Calculated using the full available price history since Dec 19, 2017	0.76

Over the past year, the correlation between BTLSX and FAOSX has dropped to 0.45 - well below their long-term average of 0.76, suggesting their price drivers have been diverging.

Return for Risk

BTLSX vs. FAOSX — Risk / Return Rank

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

BTLSX

BTLSX Risk / Return Rank: 1
BTLSX Sharpe Ratio Rank: 1
BTLSX Sortino Ratio Rank: 1
BTLSX Omega Ratio Rank: 1
BTLSX Calmar Ratio Rank: 1
BTLSX Martin Ratio Rank: 1

FAOSX

FAOSX Risk / Return Rank: 1
FAOSX Sharpe Ratio Rank: 2
FAOSX Sortino Ratio Rank: 2
FAOSX Omega Ratio Rank: 1
FAOSX Calmar Ratio Rank: 1
FAOSX Martin Ratio Rank: 2

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.

BTLSX vs. FAOSX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Baillie Gifford International Concentrated Growth Equities Fund (BTLSX) and Fidelity Advisor Overseas Fund Class Z (FAOSX). 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.

	BTLSX	FAOSX	Difference
Sharpe ratio: Return per unit of total volatility	-0.44	-0.27	-0.17
Sortino ratio: Return per unit of downside risk	-0.49	-0.31	-0.18
Omega ratio: Gain probability vs. loss probability	0.94	0.95	-0.01
Calmar ratio: Return relative to maximum drawdown	-0.40	-0.34	-0.06
Martin ratio: Return relative to average drawdown	-0.93	-0.59	-0.35
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

BTLSX vs. FAOSX - Sharpe Ratio Comparison

The current BTLSX Sharpe Ratio is -0.44, which is lower than the FAOSX Sharpe Ratio of -0.27. The chart below compares the historical Sharpe Ratios of BTLSX and FAOSX, 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

	BTLSX	FAOSX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-0.44	-0.27	-0.17
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.09	0.23	-0.32
Sharpe Ratio (All Time) Calculated using the full available price history	0.35	0.50	-0.15

Drawdowns

BTLSX vs. FAOSX - Drawdown Comparison

The maximum BTLSX drawdown since its inception was -56.26%, which is greater than FAOSX's maximum drawdown of -36.24%. Use the drawdown chart below to compare losses from any high point for BTLSX and FAOSX.

Drawdown Indicators

	BTLSX	FAOSX	Difference
Max Drawdown Largest peak-to-trough decline	-56.26%	-36.24%	-20.02%
Max Drawdown (1Y) Largest decline over 1 year	-21.66%	-7.26%	-14.40%
Max Drawdown (3Y) Largest decline over 3 years	-25.32%	-13.96%	-11.36%
Max Drawdown (5Y) Largest decline over 5 years	-55.86%	-36.24%	-19.62%
Current Drawdown Current decline from peak	-24.08%	-5.86%	-18.22%
Average Drawdown Average peak-to-trough decline	-20.64%	-7.93%	-12.71%
Ulcer Index Depth and duration of drawdowns from previous peaks	9.30%	3.97%	+5.33%

Volatility

BTLSX vs. FAOSX - Volatility Comparison

Baillie Gifford International Concentrated Growth Equities Fund (BTLSX) has a higher volatility of 4.05% compared to Fidelity Advisor Overseas Fund Class Z (FAOSX) at 0.00%. This indicates that BTLSX's price experiences larger fluctuations and is considered to be riskier than FAOSX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BTLSX	FAOSX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.05%	0.00%	+4.05%
Volatility (6M) Calculated over the trailing 6-month period	15.72%	4.08%	+11.64%
Volatility (1Y) Calculated over the trailing 1-year period	20.04%	9.18%	+10.86%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	29.13%	16.72%	+12.41%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	28.39%	16.68%	+11.71%

BTLSX vs. FAOSX - Expense Ratio Comparison

BTLSX has a 0.81% expense ratio, which is lower than FAOSX's 1.02% expense ratio.

Dividends

BTLSX vs. FAOSX - Dividend Comparison

BTLSX has not paid dividends to shareholders, while FAOSX's dividend yield for the trailing twelve months is around 8.67%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
BTLSX Baillie Gifford International Concentrated Growth Equities Fund	0.00%	0.00%	0.00%	0.00%	6.18%	25.27%	102.72%	0.17%	0.00%	0.00%
FAOSX Fidelity Advisor Overseas Fund Class Z	8.67%	8.67%	1.80%	1.12%	0.85%	2.07%	0.00%	1.70%	5.30%	3.93%

Frequently Asked Questions

Can I hold both BTLSX and FAOSX in my portfolio?

BTLSX and FAOSX have a correlation of 0.45, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, BTLSX or FAOSX?

BTLSX has higher volatility (4.05%) compared to FAOSX (0.00%). In terms of maximum drawdown, BTLSX dropped -56.26% vs FAOSX's -36.24%.

Which has better risk-adjusted returns?

FAOSX currently has the higher Sharpe Ratio (-0.27 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.