FUMIX vs. FSPSX

Last updated Aug 5, 2026

FUMIX (Fidelity SAI U.S. Momentum Index Fund) and FSPSX (Fidelity International Index Fund) are both mutual funds - FUMIX is a Large Cap Growth Equities fund tracking the Fidelity U.S. Large Cap Momentum Focus Index, while FSPSX is a Foreign Large Cap Equities fund tracking the MSCI EAFE Index. Both are passively managed. Over the past 5 years, FUMIX returned 14.44%/yr vs 9.39%/yr for FSPSX. Their 0.65 correlation means they have sometimes moved together and sometimes differently. FUMIX charges 0.11%/yr vs 0.04%/yr for FSPSX.

Performance

FUMIX vs. FSPSX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity SAI U.S. Momentum Index Fund (FUMIX) 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, FUMIX achieves a 22.70% return, which is significantly higher than FSPSX's 12.40% return.

FUMIX

• 1D: 1.04%
• 1M: -2.34%
• 6M: 19.44%
• YTD: 22.70%
• 1Y: 26.67%
• 3Y*: 28.91%
• 5Y*: 14.44%
• 10Y*: —
• ALL TIME*: 16.99%

FSPSX

• 1D: 0.54%
• 1M: 1.83%
• 6M: 6.37%
• YTD: 12.40%
• 1Y: 24.49%
• 3Y*: 17.60%
• 5Y*: 9.39%
• 10Y*: 9.66%
• ALL TIME*: 8.26%

*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)
FSPSX Fidelity International Index Fund	$0.00	$0.00	$0.00
FUMIX Fidelity SAI U.S. Momentum Index Fund	$0.00	$0.00	$0.00

FUMIX vs. FSPSX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FUMIX Fidelity SAI U.S. Momentum Index Fund	22.70%	17.01%	33.39%	14.67%	-15.79%	22.56%	29.92%	24.16%	-1.41%	22.71%
FSPSX Fidelity International Index Fund	12.40%	31.98%	3.70%	18.31%	-14.23%	11.45%	8.16%	22.03%	-13.55%	21.15%

Correlation

The correlation between FUMIX and FSPSX is 0.68, 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.	0.68
Correlation (3Y) Balances recent behavior with more history.	0.62
Correlation (5Y) Shows whether the relationship held over a longer period.	0.67
Correlation (All Time) Calculated using the full available price history since Feb 9, 2017	0.65

The correlation between FUMIX and FSPSX has been stable across timeframes, ranging from 0.62 to 0.68 - a consistent structural relationship.

Return for Risk

FUMIX vs. FSPSX — Risk / Return Rank

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

FUMIX

FUMIX Risk / Return Rank: 49
FUMIX Sharpe Ratio Rank: 42
FUMIX Sortino Ratio Rank: 41
FUMIX Omega Ratio Rank: 41
FUMIX Calmar Ratio Rank: 59
FUMIX Martin Ratio Rank: 64

FSPSX

FSPSX Risk / Return Rank: 64
FSPSX Sharpe Ratio Rank: 67
FSPSX Sortino Ratio Rank: 64
FSPSX Omega Ratio Rank: 62
FSPSX Calmar Ratio Rank: 63
FSPSX Martin Ratio Rank: 62

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.

FUMIX vs. FSPSX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity SAI U.S. Momentum Index Fund (FUMIX) 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.

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.

	FUMIX	FSPSX	Difference
Sharpe ratio: Return per unit of total volatility	1.37	1.69	-0.33
Sortino ratio: Return per unit of downside risk	1.94	2.39	-0.45
Omega ratio: Gain probability vs. loss probability	1.25	1.30	-0.05
Calmar ratio: Return relative to maximum drawdown	2.23	2.30	-0.07
Martin ratio: Return relative to average drawdown	8.89	8.72	+0.17

FUMIX vs. FSPSX - Sharpe Ratio Comparison

The current FUMIX Sharpe Ratio is 1.37, which is comparable to the FSPSX Sharpe Ratio of 1.69. The chart below compares the historical Sharpe Ratios of FUMIX 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.

Drawdowns

FUMIX vs. FSPSX - Drawdown Comparison

The maximum FUMIX drawdown since its inception was -33.36%, roughly equal to the maximum FSPSX drawdown of -33.69%. Use the drawdown chart below to compare losses from any high point for FUMIX and FSPSX.

Drawdown Indicators

	FUMIX	FSPSX	Difference
Max Drawdown Largest peak-to-trough decline	-33.36%	-33.69%	+0.33%
Max Drawdown (1Y) Largest decline over 1 year	-12.87%	-11.39%	-1.48%
Max Drawdown (3Y) Largest decline over 3 years	-19.90%	-13.58%	-6.32%
Max Drawdown (5Y) Largest decline over 5 years	-27.66%	-29.41%	+1.75%
Max Drawdown (10Y) Largest decline over 10 years	—	-33.69%	—
Current Drawdown Current decline from peak	-7.52%	-0.15%	-7.37%
Average Drawdown Average peak-to-trough decline	-6.28%	-6.49%	+0.21%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.22%	3.00%	+0.22%

Volatility

FUMIX vs. FSPSX - Volatility Comparison

Fidelity SAI U.S. Momentum Index Fund (FUMIX) has a higher volatility of 8.17% compared to Fidelity International Index Fund (FSPSX) at 4.27%. This indicates that FUMIX's price experiences larger fluctuations and is considered to be riskier than FSPSX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FUMIX	FSPSX	Difference
Volatility (1M) Calculated over the trailing 1-month period	8.17%	4.27%	+3.90%
Volatility (6M) Calculated over the trailing 6-month period	18.85%	13.21%	+5.64%
Volatility (1Y) Calculated over the trailing 1-year period	21.11%	15.50%	+5.61%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.82%	16.12%	+5.70%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.98%	16.30%	+5.68%

FUMIX vs. FSPSX - Expense Ratio Comparison

FUMIX has a 0.11% 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

FUMIX vs. FSPSX - Dividend Comparison

FUMIX's dividend yield for the trailing twelve months is around 2.26%, less than FSPSX's 2.81% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FSPSX Fidelity International Index Fund	2.81%	3.15%	3.27%	2.79%	2.66%	3.07%	1.84%	3.18%	2.79%	2.50%	3.08%	2.79%
FUMIX Fidelity SAI U.S. Momentum Index Fund	2.26%	2.77%	5.89%	18.09%	2.10%	20.67%	8.68%	2.09%	3.84%	0.88%	0.00%	0.00%

Frequently Asked Questions

Can I hold both FUMIX and FSPSX in my portfolio?

FUMIX and FSPSX have a correlation of 0.68, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FUMIX or FSPSX?

FUMIX has higher volatility (8.17%) compared to FSPSX (4.27%). In terms of maximum drawdown, FUMIX dropped -33.36% vs FSPSX's -33.69%.

Which has better risk-adjusted returns?

FSPSX currently has the higher Sharpe Ratio (1.69 vs 1.37), 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.