ACWDX vs. MBDFX

Last updated Jun 23, 2026

ACWDX (AMG GW&K Small/Mid Cap Growth Fund) and MBDFX (AMG GW&K Core Bond ESG Fund) are both mutual funds - ACWDX is a Small Cap Growth Equities fund managed by AMG, while MBDFX is a Intermediate Core Bond fund managed by AMG. Over the past 10 years, ACWDX returned 11.06%/yr vs 1.29%/yr for MBDFX. At a correlation of -0.05, they often move in opposite directions. ACWDX charges 1.00%/yr vs 0.56%/yr for MBDFX.

Performance

ACWDX vs. MBDFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in AMG GW&K Small/Mid Cap Growth Fund (ACWDX) 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, ACWDX achieves a 17.13% return, which is significantly higher than MBDFX's 0.17% return. Over the past 10 years, ACWDX has outperformed MBDFX with an annualized return of 11.06%, while MBDFX has yielded a comparatively lower 1.29% annualized return.

ACWDX

• 1D: 1.91%
• 1M: 4.06%
• YTD: 17.13%
• 6M: 14.41%
• 1Y: 21.78%
• 3Y*: 12.83%
• 5Y*: 5.74%
• 10Y*: 11.06%

MBDFX

• 1D: 0.22%
• 1M: 0.89%
• YTD: 0.17%
• 6M: 0.28%
• 1Y: 4.42%
• 3Y*: 3.91%
• 5Y*: -0.58%
• 10Y*: 1.29%

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

ACWDX vs. MBDFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ACWDX AMG GW&K Small/Mid Cap Growth Fund	17.13%	0.29%	9.27%	21.13%	-22.32%	12.52%	45.63%	20.24%	-5.14%	18.69%
MBDFX AMG GW&K Core Bond ESG Fund	0.17%	7.29%	1.24%	5.73%	-13.85%	-3.34%	7.33%	9.70%	-1.11%	3.88%

Correlation

The correlation between ACWDX and MBDFX is 0.38, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.38
Correlation (3Y) Calculated over the trailing 3-year period	0.26
Correlation (5Y) Calculated over the trailing 5-year period	0.19
Correlation (10Y) Calculated over the trailing 10-year period	0.02
Correlation (All Time) Calculated using the full available price history since Nov 3, 2010	-0.05

The correlation between ACWDX and MBDFX shifts across timeframes, from -0.05 (all time) to 0.38 (1 year), reflecting how their relationship changes across market environments.

Return for Risk

ACWDX vs. MBDFX — Risk / Return Rank

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

ACWDX

ACWDX Risk / Return Rank: 16
ACWDX Sharpe Ratio Rank: 15
ACWDX Sortino Ratio Rank: 13
ACWDX Omega Ratio Rank: 18
ACWDX Calmar Ratio Rank: 19
ACWDX Martin Ratio Rank: 16

MBDFX

MBDFX Risk / Return Rank: 17
MBDFX Sharpe Ratio Rank: 19
MBDFX Sortino Ratio Rank: 19
MBDFX Omega Ratio Rank: 18
MBDFX Calmar Ratio Rank: 17
MBDFX Martin Ratio Rank: 14

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.

ACWDX vs. MBDFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for AMG GW&K Small/Mid Cap Growth Fund (ACWDX) 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.

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.

	ACWDX	MBDFX	Difference
Sharpe ratio: Return per unit of total volatility	1.01	1.17	-0.16
Sortino ratio: Return per unit of downside risk	1.37	1.71	-0.34
Omega ratio: Gain probability vs. loss probability	1.21	1.21	0.00
Calmar ratio: Return relative to maximum drawdown	1.48	1.37	+0.11
Martin ratio: Return relative to average drawdown	3.99	3.73	+0.26

ACWDX vs. MBDFX - Sharpe Ratio Comparison

The current ACWDX Sharpe Ratio is 1.01, which is comparable to the MBDFX Sharpe Ratio of 1.17. The chart below compares the historical Sharpe Ratios of ACWDX 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.

Drawdowns

ACWDX vs. MBDFX - Drawdown Comparison

The maximum ACWDX drawdown since its inception was -38.86%, which is greater than MBDFX's maximum drawdown of -20.66%. Use the drawdown chart below to compare losses from any high point for ACWDX and MBDFX.

Drawdown Indicators

	ACWDX	MBDFX	Difference
Max Drawdown Largest peak-to-trough decline	-38.86%	-20.66%	-18.20%
Max Drawdown (1Y) Largest decline over 1 year	-14.99%	-3.25%	-11.74%
Max Drawdown (3Y) Largest decline over 3 years	-26.64%	-6.99%	-19.65%
Max Drawdown (5Y) Largest decline over 5 years	-32.74%	-20.54%	-12.20%
Max Drawdown (10Y) Largest decline over 10 years	-38.86%	-20.66%	-18.20%
Current Drawdown Current decline from peak	0.00%	-4.30%	+4.30%
Average Drawdown Average peak-to-trough decline	-10.03%	-3.96%	-6.07%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.53%	1.19%	+4.34%

Volatility

ACWDX vs. MBDFX - Volatility Comparison

AMG GW&K Small/Mid Cap Growth Fund (ACWDX) has a higher volatility of 6.83% compared to AMG GW&K Core Bond ESG Fund (MBDFX) at 1.19%. This indicates that ACWDX'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

	ACWDX	MBDFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.83%	1.19%	+5.64%
Volatility (6M) Calculated over the trailing 6-month period	18.78%	2.86%	+15.92%
Volatility (1Y) Calculated over the trailing 1-year period	22.00%	3.83%	+18.17%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	22.08%	6.16%	+15.92%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	23.44%	5.06%	+18.38%

ACWDX vs. MBDFX - Expense Ratio Comparison

ACWDX has a 1.00% expense ratio, which is higher than MBDFX's 0.56% expense ratio.

Dividends

ACWDX vs. MBDFX - Dividend Comparison

ACWDX has not paid dividends to shareholders, while MBDFX's dividend yield for the trailing twelve months is around 3.46%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ACWDX AMG GW&K Small/Mid Cap Growth Fund	0.00%	0.00%	0.74%	0.00%	2.04%	58.27%	4.00%	0.00%	0.00%	0.00%	0.00%	0.02%
MBDFX AMG GW&K Core Bond ESG Fund	3.46%	3.66%	3.50%	2.92%	2.16%	2.35%	1.84%	2.40%	2.30%	2.10%	2.06%	4.17%

Frequently Asked Questions

Can I hold both ACWDX and MBDFX in my portfolio?

ACWDX and MBDFX have a correlation of 0.38, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ACWDX or MBDFX?

ACWDX has higher volatility (6.83%) compared to MBDFX (1.19%). In terms of maximum drawdown, ACWDX dropped -38.86% vs MBDFX's -20.66%.

Which has better risk-adjusted returns?

MBDFX currently has the higher Sharpe Ratio (1.17 vs 1.01), 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.