SKSEX vs. SSSFX

Last updated Jun 5, 2026

SKSEX (AMG GW&K Small Cap Value Fund) and SSSFX (SouthernSun Small Cap) are both Small Cap Blend Equities funds from AMG. Over the past 10 years, SKSEX returned 9.17%/yr vs 9.20%/yr for SSSFX. Their correlation of 0.90 suggests significant overlap in exposure. SKSEX charges 1.15%/yr vs 1.30%/yr for SSSFX.

Performance

SKSEX vs. SSSFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in AMG GW&K Small Cap Value Fund (SKSEX) and SouthernSun Small Cap (SSSFX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, SKSEX achieves a 17.69% return, which is significantly higher than SSSFX's 10.46% return. Both investments have delivered pretty close results over the past 10 years, with SKSEX having a 9.17% annualized return and SSSFX not far ahead at 9.20%.

SKSEX

• 1D: -0.64%
• 1M: -1.04%
• YTD: 17.69%
• 6M: 7.79%
• 1Y: 24.42%
• 3Y*: 12.29%
• 5Y*: 5.78%
• 10Y*: 9.17%

SSSFX

• 1D: -0.30%
• 1M: -1.87%
• YTD: 10.46%
• 6M: 7.93%
• 1Y: 22.12%
• 3Y*: 8.51%
• 5Y*: 6.17%
• 10Y*: 9.20%

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

SKSEX vs. SSSFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
SKSEX AMG GW&K Small Cap Value Fund	17.69%	-4.50%	10.60%	17.49%	-15.36%	33.22%	3.30%	38.26%	-18.98%	8.39%
SSSFX SouthernSun Small Cap	10.46%	4.72%	3.46%	12.52%	-1.86%	21.87%	14.08%	35.45%	-24.32%	18.03%

Correlation

The correlation between SKSEX and SSSFX is 0.86, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.86
Correlation (3Y) Calculated over the trailing 3-year period	0.87
Correlation (5Y) Calculated over the trailing 5-year period	0.89
Correlation (10Y) Calculated over the trailing 10-year period	0.90
Correlation (All Time) Calculated using the full available price history since Oct 3, 2003	0.90

The correlation between SKSEX and SSSFX has been stable across timeframes, ranging from 0.86 to 0.90 - a consistent structural relationship.

Return for Risk

SKSEX vs. SSSFX — Risk / Return Rank

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

SKSEX

SKSEX Risk / Return Rank: 23
SKSEX Sharpe Ratio Rank: 19
SKSEX Sortino Ratio Rank: 16
SKSEX Omega Ratio Rank: 21
SKSEX Calmar Ratio Rank: 35
SKSEX Martin Ratio Rank: 26

SSSFX

SSSFX Risk / Return Rank: 17
SSSFX Sharpe Ratio Rank: 16
SSSFX Sortino Ratio Rank: 18
SSSFX Omega Ratio Rank: 15
SSSFX Calmar Ratio Rank: 19
SSSFX Martin Ratio Rank: 15

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.

SKSEX vs. SSSFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for AMG GW&K Small Cap Value Fund (SKSEX) and SouthernSun Small Cap (SSSFX). 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.

	SKSEX	SSSFX	Difference
Sharpe ratio: Return per unit of total volatility	1.22	1.11	+0.11
Sortino ratio: Return per unit of downside risk	1.67	1.72	-0.06
Omega ratio: Gain probability vs. loss probability	1.23	1.20	+0.04
Calmar ratio: Return relative to maximum drawdown	2.19	1.55	+0.64
Martin ratio: Return relative to average drawdown	6.11	4.16	+1.96
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

SKSEX vs. SSSFX - Sharpe Ratio Comparison

The current SKSEX Sharpe Ratio is 1.22, which is comparable to the SSSFX Sharpe Ratio of 1.11. The chart below compares the historical Sharpe Ratios of SKSEX and SSSFX, 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

	SKSEX	SSSFX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.22	1.11	+0.11
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.27	0.28	0.00
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.38	0.40	-0.02
Sharpe Ratio (All Time) Calculated using the full available price history	0.60	0.39	+0.21

Drawdowns

SKSEX vs. SSSFX - Drawdown Comparison

The maximum SKSEX drawdown since its inception was -65.26%, roughly equal to the maximum SSSFX drawdown of -65.85%. Use the drawdown chart below to compare losses from any high point for SKSEX and SSSFX.

Drawdown Indicators

	SKSEX	SSSFX	Difference
Max Drawdown Largest peak-to-trough decline	-65.26%	-65.85%	+0.59%
Max Drawdown (1Y) Largest decline over 1 year	-10.83%	-14.39%	+3.56%
Max Drawdown (3Y) Largest decline over 3 years	-26.39%	-32.76%	+6.37%
Max Drawdown (5Y) Largest decline over 5 years	-26.39%	-32.76%	+6.37%
Max Drawdown (10Y) Largest decline over 10 years	-49.36%	-45.20%	-4.16%
Current Drawdown Current decline from peak	-2.15%	-6.70%	+4.55%
Average Drawdown Average peak-to-trough decline	-9.23%	-10.90%	+1.67%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.87%	5.36%	-1.49%

Volatility

SKSEX vs. SSSFX - Volatility Comparison

The current volatility for AMG GW&K Small Cap Value Fund (SKSEX) is 5.29%, while SouthernSun Small Cap (SSSFX) has a volatility of 6.31%. This indicates that SKSEX experiences smaller price fluctuations and is considered to be less risky than SSSFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SKSEX	SSSFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.29%	6.31%	-1.02%
Volatility (6M) Calculated over the trailing 6-month period	15.69%	14.39%	+1.30%
Volatility (1Y) Calculated over the trailing 1-year period	19.54%	20.10%	-0.56%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.48%	22.52%	-1.04%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	24.50%	23.32%	+1.18%

SKSEX vs. SSSFX - Expense Ratio Comparison

SKSEX has a 1.15% expense ratio, which is lower than SSSFX's 1.30% expense ratio.

Dividends

SKSEX vs. SSSFX - Dividend Comparison

SKSEX has not paid dividends to shareholders, while SSSFX's dividend yield for the trailing twelve months is around 4.56%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
SKSEX AMG GW&K Small Cap Value Fund	0.00%	0.00%	8.62%	1.51%	1.69%	13.94%	43.15%	13.91%	14.98%	6.75%	0.02%	4.98%
SSSFX SouthernSun Small Cap	4.56%	5.04%	13.93%	13.87%	9.40%	11.51%	0.23%	5.29%	4.77%	0.00%	0.00%	12.69%

Frequently Asked Questions

Can I hold both SKSEX and SSSFX in my portfolio?

SKSEX and SSSFX have a correlation of 0.86, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, SKSEX or SSSFX?

SSSFX has higher volatility (6.31%) compared to SKSEX (5.29%). In terms of maximum drawdown, SKSEX dropped -65.26% vs SSSFX's -65.85%.

Which has better risk-adjusted returns?

SKSEX currently has the higher Sharpe Ratio (1.22 vs 1.11), 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.