MGFIX vs. BRWIX

Last updated Jun 4, 2026

MGFIX (AMG GW&K ESG Bond Fund) and BRWIX (AMG Boston Common Global Impact Fund) are both mutual funds - MGFIX is a Intermediate Core-Plus Bond fund managed by AMG, while BRWIX is a Large Cap Growth Equities fund managed by AMG. Over the past 10 years, MGFIX returned 1.39%/yr vs 11.27%/yr for BRWIX. At a 0.04 correlation, their price movements are largely independent. MGFIX charges 0.68%/yr vs 0.93%/yr for BRWIX.

Performance

MGFIX vs. BRWIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in AMG GW&K ESG Bond Fund (MGFIX) and AMG Boston Common Global Impact Fund (BRWIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MGFIX achieves a 0.44% return, which is significantly lower than BRWIX's 16.32% return. Over the past 10 years, MGFIX has underperformed BRWIX with an annualized return of 1.39%, while BRWIX has yielded a comparatively higher 11.27% annualized return.

MGFIX

• 1D: 0.09%
• 1M: 0.68%
• YTD: 0.44%
• 6M: 0.33%
• 1Y: 5.52%
• 3Y*: 4.30%
• 5Y*: 0.05%
• 10Y*: 1.39%

BRWIX

• 1D: 0.35%
• 1M: 5.54%
• YTD: 16.32%
• 6M: 17.79%
• 1Y: 35.31%
• 3Y*: 14.78%
• 5Y*: 5.42%
• 10Y*: 11.27%

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

MGFIX vs. BRWIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
MGFIX AMG GW&K ESG Bond Fund	0.44%	7.26%	1.50%	6.69%	-13.17%	-9.68%	7.34%	11.11%	-1.82%	6.78%
BRWIX AMG Boston Common Global Impact Fund	16.32%	21.16%	3.08%	13.75%	-25.35%	12.38%	29.77%	27.98%	-3.67%	23.65%

Correlation

The correlation between MGFIX and BRWIX is 0.37, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.37
Correlation (3Y) Calculated over the trailing 3-year period	0.36
Correlation (5Y) Calculated over the trailing 5-year period	0.32
Correlation (10Y) Calculated over the trailing 10-year period	0.22
Correlation (All Time) Calculated using the full available price history since Mar 22, 1996	0.04

Over the past year, MGFIX and BRWIX have become more correlated (0.37) than their long-term average of 0.04, meaning their price movements have been converging.

Return for Risk

MGFIX vs. BRWIX — Risk / Return Rank

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

MGFIX

MGFIX Risk / Return Rank: 26
MGFIX Sharpe Ratio Rank: 28
MGFIX Sortino Ratio Rank: 29
MGFIX Omega Ratio Rank: 26
MGFIX Calmar Ratio Rank: 26
MGFIX Martin Ratio Rank: 23

BRWIX

BRWIX Risk / Return Rank: 70
BRWIX Sharpe Ratio Rank: 75
BRWIX Sortino Ratio Rank: 69
BRWIX Omega Ratio Rank: 63
BRWIX Calmar Ratio Rank: 68
BRWIX Martin Ratio Rank: 76

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.

MGFIX vs. BRWIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for AMG GW&K ESG Bond Fund (MGFIX) and AMG Boston Common Global Impact Fund (BRWIX). 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.

	MGFIX	BRWIX	Difference
Sharpe ratio: Return per unit of total volatility	1.52	2.51	-0.99
Sortino ratio: Return per unit of downside risk	2.23	3.47	-1.24
Omega ratio: Gain probability vs. loss probability	1.27	1.44	-0.18
Calmar ratio: Return relative to maximum drawdown	1.92	3.18	-1.27
Martin ratio: Return relative to average drawdown	5.81	14.44	-8.63
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

MGFIX vs. BRWIX - Sharpe Ratio Comparison

The current MGFIX Sharpe Ratio is 1.52, which is lower than the BRWIX Sharpe Ratio of 2.51. The chart below compares the historical Sharpe Ratios of MGFIX and BRWIX, 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

	MGFIX	BRWIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.52	2.51	-0.99
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.01	0.30	-0.29
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.27	0.56	-0.29
Sharpe Ratio (All Time) Calculated using the full available price history	0.85	0.35	+0.50

Drawdowns

MGFIX vs. BRWIX - Drawdown Comparison

The maximum MGFIX drawdown since its inception was -25.03%, smaller than the maximum BRWIX drawdown of -54.49%. Use the drawdown chart below to compare losses from any high point for MGFIX and BRWIX.

Drawdown Indicators

	MGFIX	BRWIX	Difference
Max Drawdown Largest peak-to-trough decline	-25.03%	-54.49%	+29.46%
Max Drawdown (1Y) Largest decline over 1 year	-2.93%	-11.28%	+8.35%
Max Drawdown (3Y) Largest decline over 3 years	-6.75%	-20.82%	+14.07%
Max Drawdown (5Y) Largest decline over 5 years	-19.68%	-36.71%	+17.03%
Max Drawdown (10Y) Largest decline over 10 years	-25.03%	-36.71%	+11.68%
Current Drawdown Current decline from peak	-8.50%	0.00%	-8.50%
Average Drawdown Average peak-to-trough decline	-4.81%	-17.60%	+12.79%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.96%	2.48%	-1.52%

Volatility

MGFIX vs. BRWIX - Volatility Comparison

The current volatility for AMG GW&K ESG Bond Fund (MGFIX) is 1.36%, while AMG Boston Common Global Impact Fund (BRWIX) has a volatility of 4.64%. This indicates that MGFIX experiences smaller price fluctuations and is considered to be less risky than BRWIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MGFIX	BRWIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.36%	4.64%	-3.28%
Volatility (6M) Calculated over the trailing 6-month period	2.71%	11.61%	-8.90%
Volatility (1Y) Calculated over the trailing 1-year period	3.70%	14.31%	-10.61%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.76%	18.13%	-12.37%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.24%	20.16%	-14.92%

MGFIX vs. BRWIX - Expense Ratio Comparison

MGFIX has a 0.68% expense ratio, which is lower than BRWIX's 0.93% expense ratio.

Dividends

MGFIX vs. BRWIX - Dividend Comparison

MGFIX's dividend yield for the trailing twelve months is around 4.07%, more than BRWIX's 0.64% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BRWIX AMG Boston Common Global Impact Fund	0.64%	0.75%	1.17%	0.63%	0.48%	45.72%	14.71%	10.30%	0.00%	0.00%	0.00%	0.00%
MGFIX AMG GW&K ESG Bond Fund	4.07%	3.85%	3.56%	2.94%	2.41%	2.21%	3.38%	4.20%	3.89%	3.81%	4.96%	4.17%

Frequently Asked Questions

Can I hold both MGFIX and BRWIX in my portfolio?

MGFIX and BRWIX have a correlation of 0.37, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, MGFIX or BRWIX?

BRWIX has higher volatility (4.64%) compared to MGFIX (1.36%). In terms of maximum drawdown, MGFIX dropped -25.03% vs BRWIX's -54.49%.

Which has better risk-adjusted returns?

BRWIX currently has the higher Sharpe Ratio (2.51 vs 1.52), 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.