FNIDX vs. FSPSX

Last updated Jun 4, 2026

FNIDX (Fidelity International Sustainability Index Fd) and FSPSX (Fidelity International Index Fund) are both Foreign Large Cap Equities funds from Fidelity. Over the past 5 years, FNIDX returned 6.90%/yr vs 8.91%/yr for FSPSX. With a 0.95 correlation, they move nearly in lockstep. FNIDX charges 0.20%/yr vs 0.04%/yr for FSPSX.

Performance

FNIDX vs. FSPSX - Performance Comparison

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

Returns By Period

In the year-to-date period, FNIDX achieves a 11.27% return, which is significantly higher than FSPSX's 9.51% return.

FNIDX

• 1D: 0.89%
• 1M: 4.36%
• YTD: 11.27%
• 6M: 13.24%
• 1Y: 27.92%
• 3Y*: 17.30%
• 5Y*: 6.90%
• 10Y*: —

FSPSX

• 1D: 0.41%
• 1M: 4.06%
• YTD: 9.51%
• 6M: 12.14%
• 1Y: 22.52%
• 3Y*: 17.23%
• 5Y*: 8.91%
• 10Y*: 9.45%

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

FNIDX vs. FSPSX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FNIDX Fidelity International Sustainability Index Fd	11.27%	29.80%	5.67%	14.65%	-18.89%	7.65%	12.98%	22.20%	-14.00%	12.96%
FSPSX Fidelity International Index Fund	9.51%	31.98%	3.70%	18.31%	-14.23%	11.45%	8.16%	22.03%	-13.55%	11.59%

Correlation

The correlation between FNIDX and FSPSX is 0.95, 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	0.95
Correlation (3Y) Calculated over the trailing 3-year period	0.94
Correlation (5Y) Calculated over the trailing 5-year period	0.95
Correlation (All Time) Calculated using the full available price history since May 10, 2017	0.95

The correlation between FNIDX and FSPSX has been stable across timeframes, ranging from 0.94 to 0.95 - a consistent structural relationship.

Return for Risk

FNIDX vs. FSPSX — Risk / Return Rank

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

FNIDX

FNIDX Risk / Return Rank: 40
FNIDX Sharpe Ratio Rank: 40
FNIDX Sortino Ratio Rank: 37
FNIDX Omega Ratio Rank: 39
FNIDX Calmar Ratio Rank: 40
FNIDX Martin Ratio Rank: 43

FSPSX

FSPSX Risk / Return Rank: 27
FSPSX Sharpe Ratio Rank: 27
FSPSX Sortino Ratio Rank: 26
FSPSX Omega Ratio Rank: 26
FSPSX Calmar Ratio Rank: 26
FSPSX Martin Ratio Rank: 31

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.

FNIDX vs. FSPSX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity International Sustainability Index Fd (FNIDX) and Fidelity International Index Fund (FSPSX). 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.

	FNIDX	FSPSX	Difference
Sharpe ratio: Return per unit of total volatility	1.83	1.47	+0.36
Sortino ratio: Return per unit of downside risk	2.55	2.10	+0.45
Omega ratio: Gain probability vs. loss probability	1.33	1.27	+0.07
Calmar ratio: Return relative to maximum drawdown	2.40	1.91	+0.49
Martin ratio: Return relative to average drawdown	9.14	7.16	+1.98
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

FNIDX vs. FSPSX - Sharpe Ratio Comparison

The current FNIDX Sharpe Ratio is 1.83, which is comparable to the FSPSX Sharpe Ratio of 1.47. The chart below compares the historical Sharpe Ratios of FNIDX and FSPSX, 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

	FNIDX	FSPSX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.83	1.47	+0.36
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.44	0.56	-0.12
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.57	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.50	0.50	0.00

Drawdowns

FNIDX vs. FSPSX - Drawdown Comparison

The maximum FNIDX drawdown since its inception was -33.17%, roughly equal to the maximum FSPSX drawdown of -33.69%. Use the drawdown chart below to compare losses from any high point for FNIDX and FSPSX.

Drawdown Indicators

	FNIDX	FSPSX	Difference
Max Drawdown Largest peak-to-trough decline	-33.17%	-33.69%	+0.52%
Max Drawdown (1Y) Largest decline over 1 year	-11.36%	-11.39%	+0.03%
Max Drawdown (3Y) Largest decline over 3 years	-14.92%	-13.58%	-1.34%
Max Drawdown (5Y) Largest decline over 5 years	-32.79%	-29.41%	-3.38%
Max Drawdown (10Y) Largest decline over 10 years	—	-33.69%	—
Current Drawdown Current decline from peak	0.00%	-0.45%	+0.45%
Average Drawdown Average peak-to-trough decline	-8.26%	-6.55%	-1.71%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.97%	3.03%	-0.06%

Volatility

FNIDX vs. FSPSX - Volatility Comparison

Fidelity International Sustainability Index Fd (FNIDX) and Fidelity International Index Fund (FSPSX) have volatilities of 4.45% and 4.62%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FNIDX	FSPSX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.45%	4.62%	-0.17%
Volatility (6M) Calculated over the trailing 6-month period	12.32%	12.04%	+0.28%
Volatility (1Y) Calculated over the trailing 1-year period	14.88%	14.80%	+0.08%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	15.80%	15.98%	-0.18%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	16.55%	16.56%	-0.01%

FNIDX vs. FSPSX - Expense Ratio Comparison

FNIDX has a 0.20% expense ratio, which is higher than FSPSX's 0.04% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

FNIDX vs. FSPSX - Dividend Comparison

FNIDX's dividend yield for the trailing twelve months is around 2.53%, less than FSPSX's 2.88% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FNIDX Fidelity International Sustainability Index Fd	2.53%	2.81%	2.34%	2.64%	2.32%	1.93%	1.13%	2.17%	2.28%	1.27%	0.00%	0.00%
FSPSX Fidelity International Index Fund	2.88%	3.15%	3.27%	2.79%	2.66%	3.07%	1.84%	3.18%	2.79%	2.50%	3.08%	2.79%

Frequently Asked Questions

Can I hold both FNIDX and FSPSX in my portfolio?

With a correlation of 0.95, FNIDX and FSPSX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, FNIDX or FSPSX?

FSPSX has higher volatility (4.62%) compared to FNIDX (4.45%). In terms of maximum drawdown, FNIDX dropped -33.17% vs FSPSX's -33.69%.

Which has better risk-adjusted returns?

FNIDX currently has the higher Sharpe Ratio (1.83 vs 1.47), 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.