BRWIX vs. GWETX

Last updated Aug 1, 2026

BRWIX (AMG Boston Common Global Impact Fund) and GWETX (AMG GW&K Small Cap Core Fund) are both mutual funds - BRWIX is a Large Cap Growth Equities fund managed by AMG, while GWETX is a Small Cap Blend Equities fund managed by AMG. Over the past 10 years, BRWIX returned 10.18%/yr vs 9.56%/yr for GWETX. Their correlation of 0.83 means they have usually moved in the same direction. BRWIX charges 0.93%/yr vs 1.30%/yr for GWETX.

Performance

BRWIX vs. GWETX - Performance Comparison

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

Returns By Period

In the year-to-date period, BRWIX achieves a 10.64% return, which is significantly lower than GWETX's 13.54% return. Over the past 10 years, BRWIX has outperformed GWETX with an annualized return of 10.18%, while GWETX has yielded a comparatively lower 9.56% annualized return.

BRWIX

• 1D: 2.97%
• 1M: -2.16%
• 6M: 7.15%
• YTD: 10.64%
• 1Y: 24.46%
• 3Y*: 11.18%
• 5Y*: 3.36%
• 10Y*: 10.18%
• ALL TIME*: 7.14%

GWETX

• 1D: 1.31%
• 1M: -1.81%
• 6M: 9.37%
• YTD: 13.54%
• 1Y: 16.27%
• 3Y*: 8.81%
• 5Y*: 3.56%
• 10Y*: 9.56%
• ALL TIME*: 6.87%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
BRWIX AMG Boston Common Global Impact Fund	$0.00	$0.00	$0.00
GWETX AMG GW&K Small Cap Core Fund	$0.00	$0.00	$0.00

BRWIX vs. GWETX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
BRWIX AMG Boston Common Global Impact Fund	10.64%	21.16%	3.08%	13.75%	-25.35%	12.38%	29.77%	27.98%	-3.67%	23.65%
GWETX AMG GW&K Small Cap Core Fund	13.54%	-0.62%	13.60%	8.03%	-16.60%	21.09%	17.72%	38.10%	-14.03%	20.32%

Correlation

The correlation between BRWIX and GWETX is 0.71, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.71
Correlation (3Y) Balances recent behavior with more history.	0.78
Correlation (5Y) Shows whether the relationship held over a longer period.	0.82
Correlation (10Y) Provides a long-term view across more market conditions.	0.80
Correlation (All Time) Calculated using the full available price history since Jan 2, 1997	0.83

The correlation between BRWIX and GWETX shifts across timeframes, from 0.71 (1 year) to 0.83 (all time), reflecting how their relationship changes across market environments.

Return for Risk

BRWIX vs. GWETX — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

BRWIX

BRWIX Risk / Return Rank: 54
BRWIX Sharpe Ratio Rank: 53
BRWIX Sortino Ratio Rank: 52
BRWIX Omega Ratio Rank: 50
BRWIX Calmar Ratio Rank: 56
BRWIX Martin Ratio Rank: 59

GWETX

GWETX Risk / Return Rank: 19
GWETX Sharpe Ratio Rank: 18
GWETX Sortino Ratio Rank: 18
GWETX Omega Ratio Rank: 20
GWETX Calmar Ratio Rank: 22
GWETX Martin Ratio Rank: 20

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

BRWIX vs. GWETX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for AMG Boston Common Global Impact Fund (BRWIX) and AMG GW&K Small Cap Core Fund (GWETX). 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.

	BRWIX	GWETX	Difference
Sharpe ratio: Return per unit of total volatility	1.38	0.73	+0.65
Sortino ratio: Return per unit of downside risk	1.97	1.09	+0.88
Omega ratio: Gain probability vs. loss probability	1.25	1.15	+0.10
Calmar ratio: Return relative to maximum drawdown	1.99	1.08	+0.91
Martin ratio: Return relative to average drawdown	7.77	3.00	+4.76

BRWIX vs. GWETX - Sharpe Ratio Comparison

The current BRWIX Sharpe Ratio is 1.38, which is higher than the GWETX Sharpe Ratio of 0.73. The chart below compares the historical Sharpe Ratios of BRWIX and GWETX, 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

BRWIX vs. GWETX - Drawdown Comparison

The maximum BRWIX drawdown since its inception was -54.49%, smaller than the maximum GWETX drawdown of -67.27%. Use the drawdown chart below to compare losses from any high point for BRWIX and GWETX.

Drawdown Indicators

	BRWIX	GWETX	Difference
Max Drawdown Largest peak-to-trough decline	-54.49%	-67.27%	+12.78%
Max Drawdown (1Y) Largest decline over 1 year	-11.28%	-13.26%	+1.98%
Max Drawdown (3Y) Largest decline over 3 years	-20.82%	-24.48%	+3.66%
Max Drawdown (5Y) Largest decline over 5 years	-36.71%	-30.50%	-6.21%
Max Drawdown (10Y) Largest decline over 10 years	-36.71%	-41.37%	+4.66%
Current Drawdown Current decline from peak	-4.88%	-3.97%	-0.91%
Average Drawdown Average peak-to-trough decline	-17.52%	-19.21%	+1.69%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.88%	4.75%	-1.87%

Volatility

BRWIX vs. GWETX - Volatility Comparison

AMG Boston Common Global Impact Fund (BRWIX) has a higher volatility of 5.57% compared to AMG GW&K Small Cap Core Fund (GWETX) at 4.25%. This indicates that BRWIX's price experiences larger fluctuations and is considered to be riskier than GWETX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BRWIX	GWETX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.57%	4.25%	+1.32%
Volatility (6M) Calculated over the trailing 6-month period	13.89%	12.99%	+0.90%
Volatility (1Y) Calculated over the trailing 1-year period	16.25%	19.70%	-3.45%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.44%	21.34%	-2.90%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.23%	22.20%	-1.97%

BRWIX vs. GWETX - Expense Ratio Comparison

BRWIX has a 0.93% expense ratio, which is lower than GWETX's 1.30% expense ratio.

Dividends

BRWIX vs. GWETX - Dividend Comparison

BRWIX's dividend yield for the trailing twelve months is around 0.68%, while GWETX has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BRWIX AMG Boston Common Global Impact Fund	0.68%	0.75%	1.17%	0.63%	0.48%	45.72%	14.71%	10.30%	0.00%	0.00%	0.00%	0.00%
GWETX AMG GW&K Small Cap Core Fund	0.00%	0.00%	4.04%	0.70%	0.75%	9.16%	2.43%	10.50%	14.38%	5.46%	4.24%	4.10%

Frequently Asked Questions

Can I hold both BRWIX and GWETX in my portfolio?

BRWIX and GWETX have a correlation of 0.71, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, BRWIX or GWETX?

BRWIX has higher volatility (5.57%) compared to GWETX (4.25%). In terms of maximum drawdown, BRWIX dropped -54.49% vs GWETX's -67.27%.

Which has better risk-adjusted returns?

BRWIX currently has the higher Sharpe Ratio (1.38 vs 0.73), 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.