MECIX vs. FSISX

Last updated Jun 4, 2026

MECIX (AMG GW&K International Small Cap Fund) and FSISX (Fidelity SAI International Small Cap Index Fund) are both Foreign Small & Mid Cap Equities funds. Over the past 5 years, MECIX returned 1.14%/yr vs 5.61%/yr for FSISX. Their correlation of 0.90 suggests significant overlap in exposure. MECIX charges 0.99%/yr vs 0.10%/yr for FSISX.

Performance

MECIX vs. FSISX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in AMG GW&K International Small Cap Fund (MECIX) and Fidelity SAI International Small Cap Index Fund (FSISX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MECIX achieves a 7.56% return, which is significantly lower than FSISX's 10.30% return.

MECIX

• 1D: -0.37%
• 1M: 1.10%
• YTD: 7.56%
• 6M: 7.66%
• 1Y: 13.17%
• 3Y*: 9.28%
• 5Y*: 1.14%
• 10Y*: 5.62%

FSISX

• 1D: -0.09%
• 1M: 2.87%
• YTD: 10.30%
• 6M: 13.47%
• 1Y: 25.30%
• 3Y*: 16.81%
• 5Y*: 5.61%
• 10Y*: —

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

MECIX vs. FSISX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
MECIX AMG GW&K International Small Cap Fund	7.56%	16.57%	2.15%	6.23%	-20.34%	-2.91%
FSISX Fidelity SAI International Small Cap Index Fund	10.30%	32.61%	1.74%	13.23%	-21.18%	-0.40%

Correlation

The correlation between MECIX and FSISX is 0.89, 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	0.89
Correlation (3Y) Calculated over the trailing 3-year period	0.89
Correlation (5Y) Calculated over the trailing 5-year period	0.90
Correlation (All Time) Calculated using the full available price history since May 28, 2021	0.90

The correlation between MECIX and FSISX has been stable across timeframes, ranging from 0.89 to 0.90 - a consistent structural relationship.

Return for Risk

MECIX vs. FSISX — Risk / Return Rank

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

MECIX

MECIX Risk / Return Rank: 12
MECIX Sharpe Ratio Rank: 12
MECIX Sortino Ratio Rank: 11
MECIX Omega Ratio Rank: 12
MECIX Calmar Ratio Rank: 12
MECIX Martin Ratio Rank: 14

FSISX

FSISX Risk / Return Rank: 37
FSISX Sharpe Ratio Rank: 39
FSISX Sortino Ratio Rank: 38
FSISX Omega Ratio Rank: 39
FSISX Calmar Ratio Rank: 31
FSISX Martin Ratio Rank: 35

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.

MECIX vs. FSISX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for AMG GW&K International Small Cap Fund (MECIX) and Fidelity SAI International Small Cap Index Fund (FSISX). 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.

	MECIX	FSISX	Difference
Sharpe ratio: Return per unit of total volatility	0.91	1.82	-0.91
Sortino ratio: Return per unit of downside risk	1.32	2.58	-1.26
Omega ratio: Gain probability vs. loss probability	1.17	1.33	-0.16
Calmar ratio: Return relative to maximum drawdown	1.18	2.10	-0.92
Martin ratio: Return relative to average drawdown	3.97	7.81	-3.83
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

MECIX vs. FSISX - Sharpe Ratio Comparison

The current MECIX Sharpe Ratio is 0.91, which is lower than the FSISX Sharpe Ratio of 1.82. The chart below compares the historical Sharpe Ratios of MECIX and FSISX, 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

	MECIX	FSISX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.91	1.82	-0.91
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.08	0.35	-0.28
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.29	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.43	0.36	+0.06

Drawdowns

MECIX vs. FSISX - Drawdown Comparison

The maximum MECIX drawdown since its inception was -68.42%, which is greater than FSISX's maximum drawdown of -36.84%. Use the drawdown chart below to compare losses from any high point for MECIX and FSISX.

Drawdown Indicators

	MECIX	FSISX	Difference
Max Drawdown Largest peak-to-trough decline	-68.42%	-36.84%	-31.58%
Max Drawdown (1Y) Largest decline over 1 year	-10.60%	-11.73%	+1.13%
Max Drawdown (3Y) Largest decline over 3 years	-17.72%	-14.75%	-2.97%
Max Drawdown (5Y) Largest decline over 5 years	-37.38%	-36.84%	-0.54%
Max Drawdown (10Y) Largest decline over 10 years	-51.20%	—	—
Current Drawdown Current decline from peak	-2.60%	-1.29%	-1.31%
Average Drawdown Average peak-to-trough decline	-14.21%	-13.12%	-1.09%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.12%	3.14%	-0.02%

Volatility

MECIX vs. FSISX - Volatility Comparison

The current volatility for AMG GW&K International Small Cap Fund (MECIX) is 3.12%, while Fidelity SAI International Small Cap Index Fund (FSISX) has a volatility of 3.73%. This indicates that MECIX experiences smaller price fluctuations and is considered to be less risky than FSISX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MECIX	FSISX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.12%	3.73%	-0.61%
Volatility (6M) Calculated over the trailing 6-month period	11.17%	10.86%	+0.31%
Volatility (1Y) Calculated over the trailing 1-year period	13.68%	13.52%	+0.16%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	14.83%	15.90%	-1.07%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.31%	15.89%	+3.42%

MECIX vs. FSISX - Expense Ratio Comparison

MECIX has a 0.99% expense ratio, which is higher than FSISX's 0.10% expense ratio.

Dividends

MECIX vs. FSISX - Dividend Comparison

MECIX has not paid dividends to shareholders, while FSISX's dividend yield for the trailing twelve months is around 3.35%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018
FSISX Fidelity SAI International Small Cap Index Fund	3.35%	3.70%	3.33%	3.13%	3.02%	1.30%	0.00%	0.00%	0.00%
MECIX AMG GW&K International Small Cap Fund	0.00%	0.00%	2.06%	1.51%	1.34%	0.68%	0.00%	0.02%	9.02%

Frequently Asked Questions

Can I hold both MECIX and FSISX in my portfolio?

MECIX and FSISX have a correlation of 0.89, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, MECIX or FSISX?

FSISX has higher volatility (3.73%) compared to MECIX (3.12%). In terms of maximum drawdown, MECIX dropped -68.42% vs FSISX's -36.84%.

Which has better risk-adjusted returns?

FSISX currently has the higher Sharpe Ratio (1.82 vs 0.91), 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.