YASLX vs. MBDFX

Last updated Jun 4, 2026

YASLX (AMG Yacktman Special Opportunities Fund) and MBDFX (AMG GW&K Core Bond ESG Fund) are both mutual funds - YASLX is a Foreign Small & Mid Cap Equities fund managed by AMG, while MBDFX is a Intermediate Core Bond fund managed by AMG. Over the past 10 years, YASLX returned 11.42%/yr vs 1.27%/yr for MBDFX. At a 0.04 correlation, their price movements are largely independent. YASLX charges 1.86%/yr vs 0.56%/yr for MBDFX.

Performance

YASLX vs. MBDFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in AMG Yacktman Special Opportunities Fund (YASLX) and AMG GW&K Core Bond ESG Fund (MBDFX). 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 MBDFX's -0.05% return. Over the past 10 years, YASLX has outperformed MBDFX with an annualized return of 11.42%, while MBDFX has yielded a comparatively lower 1.27% annualized 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%

MBDFX

• 1D: 0.00%
• 1M: 0.56%
• YTD: -0.05%
• 6M: -0.28%
• 1Y: 5.01%
• 3Y*: 3.84%
• 5Y*: -0.46%
• 10Y*: 1.27%

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

YASLX vs. MBDFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
YASLX AMG Yacktman Special Opportunities Fund	17.60%	6.27%	11.23%	3.65%	-13.59%	24.45%	12.82%	17.07%	-10.15%	34.85%
MBDFX AMG GW&K Core Bond ESG Fund	-0.05%	7.29%	1.24%	5.73%	-13.85%	-3.34%	7.33%	9.70%	-1.11%	3.88%

Correlation

The correlation between YASLX and MBDFX is 0.30, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.30
Correlation (3Y) Calculated over the trailing 3-year period	0.23
Correlation (5Y) Calculated over the trailing 5-year period	0.18
Correlation (10Y) Calculated over the trailing 10-year period	0.07
Correlation (All Time) Calculated using the full available price history since Jan 5, 2015	0.04

Over the past year, YASLX and MBDFX have become more correlated (0.30) than their long-term average of 0.04, meaning their price movements have been converging.

Return for Risk

YASLX vs. MBDFX — 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

MBDFX

MBDFX Risk / Return Rank: 19
MBDFX Sharpe Ratio Rank: 21
MBDFX Sortino Ratio Rank: 21
MBDFX Omega Ratio Rank: 20
MBDFX Calmar Ratio Rank: 18
MBDFX Martin Ratio Rank: 16

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. MBDFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for AMG Yacktman Special Opportunities Fund (YASLX) and AMG GW&K Core Bond ESG Fund (MBDFX). 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	MBDFX	Difference
Sharpe ratio: Return per unit of total volatility	1.72	1.31	+0.41
Sortino ratio: Return per unit of downside risk	2.34	1.92	+0.42
Omega ratio: Gain probability vs. loss probability	1.32	1.23	+0.09
Calmar ratio: Return relative to maximum drawdown	1.85	1.56	+0.29
Martin ratio: Return relative to average drawdown	5.29	4.52	+0.77
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. MBDFX - Sharpe Ratio Comparison

The current YASLX Sharpe Ratio is 1.72, which is higher than the MBDFX Sharpe Ratio of 1.31. The chart below compares the historical Sharpe Ratios of YASLX and MBDFX, 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	MBDFX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.72	1.31	+0.41
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.27	-0.07	+0.35
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.76	0.25	+0.51
Sharpe Ratio (All Time) Calculated using the full available price history	0.62	0.48	+0.14

Drawdowns

YASLX vs. MBDFX - Drawdown Comparison

The maximum YASLX drawdown since its inception was -38.91%, which is greater than MBDFX's maximum drawdown of -20.66%. Use the drawdown chart below to compare losses from any high point for YASLX and MBDFX.

Drawdown Indicators

	YASLX	MBDFX	Difference
Max Drawdown Largest peak-to-trough decline	-38.91%	-20.66%	-18.25%
Max Drawdown (1Y) Largest decline over 1 year	-10.18%	-3.25%	-6.93%
Max Drawdown (3Y) Largest decline over 3 years	-16.65%	-6.99%	-9.66%
Max Drawdown (5Y) Largest decline over 5 years	-27.74%	-20.54%	-7.20%
Max Drawdown (10Y) Largest decline over 10 years	-38.91%	-20.66%	-18.25%
Current Drawdown Current decline from peak	0.00%	-4.51%	+4.51%
Average Drawdown Average peak-to-trough decline	-8.22%	-3.96%	-4.26%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.54%	1.11%	+2.43%

Volatility

YASLX vs. MBDFX - Volatility Comparison

AMG Yacktman Special Opportunities Fund (YASLX) has a higher volatility of 2.62% compared to AMG GW&K Core Bond ESG Fund (MBDFX) at 1.35%. This indicates that YASLX's price experiences larger fluctuations and is considered to be riskier than MBDFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	YASLX	MBDFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.62%	1.35%	+1.27%
Volatility (6M) Calculated over the trailing 6-month period	8.58%	2.79%	+5.79%
Volatility (1Y) Calculated over the trailing 1-year period	10.99%	3.87%	+7.12%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.32%	6.15%	+10.17%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	15.03%	5.06%	+9.97%

YASLX vs. MBDFX - Expense Ratio Comparison

YASLX has a 1.86% expense ratio, which is higher than MBDFX's 0.56% expense ratio.

Dividends

YASLX vs. MBDFX - Dividend Comparison

YASLX has not paid dividends to shareholders, while MBDFX's dividend yield for the trailing twelve months is around 3.47%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
MBDFX AMG GW&K Core Bond ESG Fund	3.47%	3.66%	3.50%	2.92%	2.16%	2.35%	1.84%	2.40%	2.30%	2.10%	2.06%	4.17%
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 MBDFX in my portfolio?

YASLX and MBDFX have a correlation of 0.30, 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 MBDFX?

YASLX has higher volatility (2.62%) compared to MBDFX (1.35%). In terms of maximum drawdown, YASLX dropped -38.91% vs MBDFX's -20.66%.

Which has better risk-adjusted returns?

YASLX currently has the higher Sharpe Ratio (1.72 vs 1.31), 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.