FISMX vs. FSSNX

Last updated Jun 23, 2026

FISMX (Fidelity International Small Cap Fund) and FSSNX (Fidelity Small Cap Index Fund) are both mutual funds - FISMX is a Foreign Small & Mid Cap Equities fund managed by Fidelity, while FSSNX is a Small Cap Blend Equities fund tracking the Russell 2000 Index. Over the past 10 years, FISMX returned 9.08%/yr vs 11.46%/yr for FSSNX. A 0.64 correlation means they provide meaningful diversification when combined. FISMX charges 1.01%/yr vs 0.03%/yr for FSSNX.

Performance

FISMX vs. FSSNX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity International Small Cap Fund (FISMX) and Fidelity Small Cap Index Fund (FSSNX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FISMX achieves a 11.30% return, which is significantly lower than FSSNX's 20.76% return. Over the past 10 years, FISMX has underperformed FSSNX with an annualized return of 9.08%, while FSSNX has yielded a comparatively higher 11.46% annualized return.

FISMX

• 1D: 0.86%
• 1M: 1.44%
• YTD: 11.30%
• 6M: 11.88%
• 1Y: 20.19%
• 3Y*: 13.92%
• 5Y*: 7.07%
• 10Y*: 9.08%

FSSNX

• 1D: 2.10%
• 1M: 3.98%
• YTD: 20.76%
• 6M: 17.19%
• 1Y: 43.21%
• 3Y*: 18.44%
• 5Y*: 7.47%
• 10Y*: 11.46%

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

FISMX vs. FSSNX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FISMX Fidelity International Small Cap Fund	11.30%	24.73%	0.05%	19.62%	-16.66%	13.44%	9.98%	21.45%	-16.08%	31.58%
FSSNX Fidelity Small Cap Index Fund	20.76%	12.94%	11.71%	17.11%	-20.28%	14.70%	19.99%	25.70%	-11.24%	14.54%

Correlation

The correlation between FISMX and FSSNX is 0.63, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.63
Correlation (3Y) Calculated over the trailing 3-year period	0.65
Correlation (5Y) Calculated over the trailing 5-year period	0.69
Correlation (10Y) Calculated over the trailing 10-year period	0.65
Correlation (All Time) Calculated using the full available price history since Sep 9, 2011	0.64

The correlation between FISMX and FSSNX has been stable across timeframes, ranging from 0.63 to 0.69 - a consistent structural relationship.

Return for Risk

FISMX vs. FSSNX — Risk / Return Rank

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

FISMX

FISMX Risk / Return Rank: 31
FISMX Sharpe Ratio Rank: 31
FISMX Sortino Ratio Rank: 32
FISMX Omega Ratio Rank: 34
FISMX Calmar Ratio Rank: 27
FISMX Martin Ratio Rank: 29

FSSNX

FSSNX Risk / Return Rank: 69
FSSNX Sharpe Ratio Rank: 66
FSSNX Sortino Ratio Rank: 62
FSSNX Omega Ratio Rank: 50
FSSNX Calmar Ratio Rank: 86
FSSNX Martin Ratio Rank: 80

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.

FISMX vs. FSSNX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity International Small Cap Fund (FISMX) and Fidelity Small Cap Index Fund (FSSNX). 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.

	FISMX	FSSNX	Difference
Sharpe ratio: Return per unit of total volatility	1.50	2.19	-0.69
Sortino ratio: Return per unit of downside risk	2.19	2.99	-0.80
Omega ratio: Gain probability vs. loss probability	1.28	1.36	-0.07
Calmar ratio: Return relative to maximum drawdown	1.81	3.92	-2.11
Martin ratio: Return relative to average drawdown	6.37	13.88	-7.51

FISMX vs. FSSNX - Sharpe Ratio Comparison

The current FISMX Sharpe Ratio is 1.50, which is lower than the FSSNX Sharpe Ratio of 2.19. The chart below compares the historical Sharpe Ratios of FISMX and FSSNX, 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

FISMX vs. FSSNX - Drawdown Comparison

The maximum FISMX drawdown since its inception was -60.94%, which is greater than FSSNX's maximum drawdown of -41.72%. Use the drawdown chart below to compare losses from any high point for FISMX and FSSNX.

Drawdown Indicators

	FISMX	FSSNX	Difference
Max Drawdown Largest peak-to-trough decline	-60.94%	-41.72%	-19.22%
Max Drawdown (1Y) Largest decline over 1 year	-10.71%	-11.00%	+0.29%
Max Drawdown (3Y) Largest decline over 3 years	-12.70%	-27.45%	+14.75%
Max Drawdown (5Y) Largest decline over 5 years	-31.07%	-31.87%	+0.80%
Max Drawdown (10Y) Largest decline over 10 years	-38.80%	-41.72%	+2.92%
Current Drawdown Current decline from peak	-0.12%	0.00%	-0.12%
Average Drawdown Average peak-to-trough decline	-10.63%	-8.27%	-2.36%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.03%	3.10%	-0.07%

Volatility

FISMX vs. FSSNX - Volatility Comparison

The current volatility for Fidelity International Small Cap Fund (FISMX) is 5.04%, while Fidelity Small Cap Index Fund (FSSNX) has a volatility of 6.79%. This indicates that FISMX experiences smaller price fluctuations and is considered to be less risky than FSSNX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FISMX	FSSNX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.04%	6.79%	-1.75%
Volatility (6M) Calculated over the trailing 6-month period	10.96%	14.37%	-3.41%
Volatility (1Y) Calculated over the trailing 1-year period	12.88%	19.71%	-6.83%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	13.68%	22.68%	-9.00%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	14.08%	23.50%	-9.42%

FISMX vs. FSSNX - Expense Ratio Comparison

FISMX has a 1.01% expense ratio, which is higher than FSSNX's 0.03% expense ratio.

Dividends

FISMX vs. FSSNX - Dividend Comparison

FISMX's dividend yield for the trailing twelve months is around 3.22%, more than FSSNX's 0.90% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FISMX Fidelity International Small Cap Fund	3.22%	3.58%	2.64%	1.87%	0.70%	7.28%	0.83%	2.32%	6.14%	2.46%	2.70%	2.80%
FSSNX Fidelity Small Cap Index Fund	0.90%	1.08%	1.04%	1.43%	1.26%	3.92%	0.94%	2.96%	4.94%	3.37%	2.27%	2.66%

Frequently Asked Questions

Can I hold both FISMX and FSSNX in my portfolio?

FISMX and FSSNX have a correlation of 0.63, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FISMX or FSSNX?

FSSNX has higher volatility (6.79%) compared to FISMX (5.04%). In terms of maximum drawdown, FISMX dropped -60.94% vs FSSNX's -41.72%.

Which has better risk-adjusted returns?

FSSNX currently has the higher Sharpe Ratio (2.19 vs 1.50), 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.