FUQIX vs. VIGAX

Last updated Jun 4, 2026

FUQIX (Fidelity SAI U.S. Quality Index Fund) and VIGAX (Vanguard Growth Index Fund Admiral Shares) are both Large Cap Growth Equities funds. Over the past 10 years, FUQIX returned 16.02%/yr vs 18.39%/yr for VIGAX. Their correlation of 0.94 suggests significant overlap in exposure. FUQIX charges 0.10%/yr vs 0.05%/yr for VIGAX.

Performance

FUQIX vs. VIGAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity SAI U.S. Quality Index Fund (FUQIX) and Vanguard Growth Index Fund Admiral Shares (VIGAX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FUQIX achieves a 6.18% return, which is significantly lower than VIGAX's 10.82% return. Over the past 10 years, FUQIX has underperformed VIGAX with an annualized return of 16.02%, while VIGAX has yielded a comparatively higher 18.39% annualized return.

FUQIX

• 1D: -0.08%
• 1M: 6.05%
• YTD: 6.18%
• 6M: 6.49%
• 1Y: 19.86%
• 3Y*: 20.51%
• 5Y*: 14.06%
• 10Y*: 16.02%

VIGAX

• 1D: -0.28%
• 1M: 7.54%
• YTD: 10.82%
• 6M: 10.11%
• 1Y: 29.44%
• 3Y*: 26.45%
• 5Y*: 15.71%
• 10Y*: 18.39%

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

FUQIX vs. VIGAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FUQIX Fidelity SAI U.S. Quality Index Fund	6.18%	16.76%	24.32%	29.63%	-18.09%	28.28%	20.67%	34.66%	-3.39%	25.77%
VIGAX Vanguard Growth Index Fund Admiral Shares	10.82%	19.43%	32.67%	46.76%	-33.14%	27.26%	40.18%	37.23%	-3.35%	27.80%

Correlation

The correlation between FUQIX and VIGAX is 0.91, 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	0.91
Correlation (3Y) Calculated over the trailing 3-year period	0.91
Correlation (5Y) Calculated over the trailing 5-year period	0.93
Correlation (10Y) Calculated over the trailing 10-year period	0.93
Correlation (All Time) Calculated using the full available price history since Oct 19, 2015	0.94

The correlation between FUQIX and VIGAX has been stable across timeframes, ranging from 0.91 to 0.94 - a consistent structural relationship.

Return for Risk

FUQIX vs. VIGAX — Risk / Return Rank

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

FUQIX

FUQIX Risk / Return Rank: 29
FUQIX Sharpe Ratio Rank: 33
FUQIX Sortino Ratio Rank: 31
FUQIX Omega Ratio Rank: 31
FUQIX Calmar Ratio Rank: 21
FUQIX Martin Ratio Rank: 29

VIGAX

VIGAX Risk / Return Rank: 34
VIGAX Sharpe Ratio Rank: 43
VIGAX Sortino Ratio Rank: 38
VIGAX Omega Ratio Rank: 39
VIGAX Calmar Ratio Rank: 24
VIGAX Martin Ratio Rank: 27

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.

FUQIX vs. VIGAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity SAI U.S. Quality Index Fund (FUQIX) and Vanguard Growth Index Fund Admiral Shares (VIGAX). 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.

	FUQIX	VIGAX	Difference
Sharpe ratio: Return per unit of total volatility	1.63	1.92	-0.28
Sortino ratio: Return per unit of downside risk	2.30	2.59	-0.29
Omega ratio: Gain probability vs. loss probability	1.29	1.33	-0.04
Calmar ratio: Return relative to maximum drawdown	1.68	1.84	-0.17
Martin ratio: Return relative to average drawdown	6.75	6.49	+0.27
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

FUQIX vs. VIGAX - Sharpe Ratio Comparison

The current FUQIX Sharpe Ratio is 1.63, which is comparable to the VIGAX Sharpe Ratio of 1.92. The chart below compares the historical Sharpe Ratios of FUQIX and VIGAX, 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

	FUQIX	VIGAX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.63	1.92	-0.28
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.83	0.71	+0.12
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.88	0.86	+0.03
Sharpe Ratio (All Time) Calculated using the full available price history	0.85	0.48	+0.37

Drawdowns

FUQIX vs. VIGAX - Drawdown Comparison

The maximum FUQIX drawdown since its inception was -31.19%, smaller than the maximum VIGAX drawdown of -50.66%. Use the drawdown chart below to compare losses from any high point for FUQIX and VIGAX.

Drawdown Indicators

	FUQIX	VIGAX	Difference
Max Drawdown Largest peak-to-trough decline	-31.19%	-50.66%	+19.47%
Max Drawdown (1Y) Largest decline over 1 year	-12.31%	-16.51%	+4.20%
Max Drawdown (3Y) Largest decline over 3 years	-17.86%	-23.04%	+5.18%
Max Drawdown (5Y) Largest decline over 5 years	-24.96%	-35.63%	+10.67%
Max Drawdown (10Y) Largest decline over 10 years	-31.19%	-35.63%	+4.44%
Current Drawdown Current decline from peak	-0.08%	-0.28%	+0.20%
Average Drawdown Average peak-to-trough decline	-4.26%	-11.96%	+7.70%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.04%	4.68%	-1.64%

Volatility

FUQIX vs. VIGAX - Volatility Comparison

The current volatility for Fidelity SAI U.S. Quality Index Fund (FUQIX) is 2.25%, while Vanguard Growth Index Fund Admiral Shares (VIGAX) has a volatility of 3.62%. This indicates that FUQIX experiences smaller price fluctuations and is considered to be less risky than VIGAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FUQIX	VIGAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.25%	3.62%	-1.37%
Volatility (6M) Calculated over the trailing 6-month period	9.69%	12.10%	-2.41%
Volatility (1Y) Calculated over the trailing 1-year period	12.63%	15.88%	-3.25%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.10%	22.35%	-5.25%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.26%	21.59%	-3.33%

FUQIX vs. VIGAX - Expense Ratio Comparison

FUQIX has a 0.10% expense ratio, which is higher than VIGAX's 0.05% 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

FUQIX vs. VIGAX - Dividend Comparison

FUQIX's dividend yield for the trailing twelve months is around 3.42%, more than VIGAX's 0.36% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FUQIX Fidelity SAI U.S. Quality Index Fund	3.42%	3.63%	12.80%	2.38%	1.42%	8.55%	9.46%	13.68%	2.41%	3.79%	1.57%	0.29%
VIGAX Vanguard Growth Index Fund Admiral Shares	0.36%	0.40%	0.46%	0.57%	0.69%	0.47%	0.66%	0.94%	1.31%	1.14%	1.39%	1.31%

Frequently Asked Questions

Can I hold both FUQIX and VIGAX in my portfolio?

With a correlation of 0.91, FUQIX and VIGAX 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, FUQIX or VIGAX?

VIGAX has higher volatility (3.62%) compared to FUQIX (2.25%). In terms of maximum drawdown, FUQIX dropped -31.19% vs VIGAX's -50.66%.

Which has better risk-adjusted returns?

VIGAX currently has the higher Sharpe Ratio (1.92 vs 1.63), 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.