YASLX vs. VFSAX

Last updated Jun 4, 2026

YASLX (AMG Yacktman Special Opportunities Fund) and VFSAX (Vanguard FTSE All-World ex-US Small-Cap Index Fund Admiral Shares) are both Foreign Small & Mid Cap Equities funds. Over the past 5 years, YASLX returned 4.42%/yr vs 6.13%/yr for VFSAX. A 0.75 correlation means they provide meaningful diversification when combined. YASLX charges 1.86%/yr vs 0.16%/yr for VFSAX.

Performance

YASLX vs. VFSAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in AMG Yacktman Special Opportunities Fund (YASLX) and Vanguard FTSE All-World ex-US Small-Cap Index Fund Admiral Shares (VFSAX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, YASLX achieves a 17.60% return, which is significantly higher than VFSAX's 11.72% return.

YASLX

• 1D: 0.08%
• 1M: 2.00%
• YTD: 17.60%
• 6M: 16.00%
• 1Y: 18.15%
• 3Y*: 12.52%
• 5Y*: 4.42%
• 10Y*: 11.42%

VFSAX

• 1D: 0.05%
• 1M: 1.80%
• YTD: 11.72%
• 6M: 14.53%
• 1Y: 28.52%
• 3Y*: 17.12%
• 5Y*: 6.13%
• 10Y*: —

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

YASLX vs. VFSAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019
YASLX AMG Yacktman Special Opportunities Fund	17.60%	6.27%	11.23%	3.65%	-13.59%	24.45%	12.82%	10.45%
VFSAX Vanguard FTSE All-World ex-US Small-Cap Index Fund Admiral Shares	11.72%	29.89%	2.58%	15.13%	-21.30%	12.68%	11.90%	13.47%

Correlation

The correlation between YASLX and VFSAX is 0.60, 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	0.60
Correlation (3Y) Calculated over the trailing 3-year period	0.66
Correlation (5Y) Calculated over the trailing 5-year period	0.74
Correlation (All Time) Calculated using the full available price history since Feb 8, 2019	0.75

The correlation between YASLX and VFSAX shifts across timeframes, from 0.60 (1 year) to 0.75 (all time), reflecting how their relationship changes across market environments.

Return for Risk

YASLX vs. VFSAX — Risk / Return Rank

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

YASLX

YASLX Risk / Return Rank: 30
YASLX Sharpe Ratio Rank: 35
YASLX Sortino Ratio Rank: 31
YASLX Omega Ratio Rank: 37
YASLX Calmar Ratio Rank: 25
YASLX Martin Ratio Rank: 20

VFSAX

VFSAX Risk / Return Rank: 47
VFSAX Sharpe Ratio Rank: 51
VFSAX Sortino Ratio Rank: 47
VFSAX Omega Ratio Rank: 50
VFSAX Calmar Ratio Rank: 42
VFSAX Martin Ratio Rank: 45

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.

YASLX vs. VFSAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for AMG Yacktman Special Opportunities Fund (YASLX) and Vanguard FTSE All-World ex-US Small-Cap Index Fund Admiral Shares (VFSAX). 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.

	YASLX	VFSAX	Difference
Sharpe ratio Return per unit of total volatility	1.72	2.11	-0.39
Sortino ratio Return per unit of downside risk	2.34	2.88	-0.55
Omega ratio Gain probability vs. loss probability	1.32	1.39	-0.06
Calmar ratio Return relative to maximum drawdown	1.85	2.45	-0.60
Martin ratio Return relative to average drawdown	5.29	9.44	-4.15
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

YASLX vs. VFSAX - Sharpe Ratio Comparison

The current YASLX Sharpe Ratio is 1.72, which is comparable to the VFSAX Sharpe Ratio of 2.11. The chart below compares the historical Sharpe Ratios of YASLX and VFSAX, 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

	YASLX	VFSAX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.72	2.11	-0.39
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.27	0.41	-0.14
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.76	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.62	0.55	+0.07

Drawdowns

YASLX vs. VFSAX - Drawdown Comparison

The maximum YASLX drawdown since its inception was -38.91%, roughly equal to the maximum VFSAX drawdown of -39.86%. Use the drawdown chart below to compare losses from any high point for YASLX and VFSAX.

Drawdown Indicators

	YASLX	VFSAX	Difference
Max Drawdown Largest peak-to-trough decline	-38.91%	-39.86%	+0.95%
Max Drawdown (1Y) Largest decline over 1 year	-10.18%	-11.48%	+1.30%
Max Drawdown (3Y) Largest decline over 3 years	-16.65%	-14.73%	-1.92%
Max Drawdown (5Y) Largest decline over 5 years	-27.74%	-33.81%	+6.07%
Max Drawdown (10Y) Largest decline over 10 years	-38.91%	—	—
Current Drawdown Current decline from peak	0.00%	-1.08%	+1.08%
Average Drawdown Average peak-to-trough decline	-8.22%	-9.26%	+1.04%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.54%	2.98%	+0.56%

Volatility

YASLX vs. VFSAX - Volatility Comparison

The current volatility for AMG Yacktman Special Opportunities Fund (YASLX) is 2.62%, while Vanguard FTSE All-World ex-US Small-Cap Index Fund Admiral Shares (VFSAX) has a volatility of 4.31%. This indicates that YASLX experiences smaller price fluctuations and is considered to be less risky than VFSAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	YASLX	VFSAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.62%	4.31%	-1.69%
Volatility (6M) Calculated over the trailing 6-month period	8.58%	11.18%	-2.60%
Volatility (1Y) Calculated over the trailing 1-year period	10.99%	13.39%	-2.40%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.32%	15.04%	+1.28%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	15.03%	17.03%	-2.00%

YASLX vs. VFSAX - Expense Ratio Comparison

YASLX has a 1.86% expense ratio, which is higher than VFSAX's 0.16% expense ratio.

Dividends

YASLX vs. VFSAX - Dividend Comparison

YASLX has not paid dividends to shareholders, while VFSAX's dividend yield for the trailing twelve months is around 2.96%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
VFSAX Vanguard FTSE All-World ex-US Small-Cap Index Fund Admiral Shares	2.96%	3.31%	3.36%	3.06%	2.22%	2.67%	1.85%	3.19%	0.00%	0.00%	0.00%	0.00%
YASLX AMG Yacktman Special Opportunities Fund	0.00%	0.00%	15.82%	8.97%	0.94%	3.85%	2.62%	12.95%	9.89%	4.86%	3.28%	4.59%

Frequently Asked Questions

Can I hold both YASLX and VFSAX in my portfolio?

YASLX and VFSAX have a correlation of 0.60, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, YASLX or VFSAX?

VFSAX has higher volatility (4.31%) compared to YASLX (2.62%). In terms of maximum drawdown, YASLX dropped -38.91% vs VFSAX's -39.86%.

Which has better risk-adjusted returns?

VFSAX currently has the higher Sharpe Ratio (2.11 vs 1.72), 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.