FZILX vs. VOOG

Last updated Jun 16, 2026

FZILX (Fidelity ZERO International Index Fund) and VOOG (Vanguard S&P 500 Growth ETF) are both funds - FZILX is a Foreign Large Cap Equities fund tracking the Fidelity Global ex U.S. Index, while VOOG is a S&P 500 fund tracking the S&P 500 Growth Index. Both are passively managed. Over the past 5 years, FZILX returned 8.89%/yr vs 15.50%/yr for VOOG. A 0.71 correlation means they provide meaningful diversification when combined. FZILX charges 0.00%/yr vs 0.07%/yr for VOOG.

Performance

FZILX vs. VOOG - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity ZERO International Index Fund (FZILX) and Vanguard S&P 500 Growth ETF (VOOG). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FZILX achieves a 14.46% return, which is significantly higher than VOOG's 12.80% return.

FZILX

• 1D: 0.60%
• 1M: 3.44%
• YTD: 14.46%
• 6M: 15.88%
• 1Y: 31.18%
• 3Y*: 19.17%
• 5Y*: 8.89%
• 10Y*: —

VOOG

• 1D: 2.86%
• 1M: 1.56%
• YTD: 12.80%
• 6M: 14.09%
• 1Y: 32.82%
• 3Y*: 26.64%
• 5Y*: 15.50%
• 10Y*: 18.26%

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

FZILX vs. VOOG - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
FZILX Fidelity ZERO International Index Fund	14.46%	33.52%	5.32%	16.28%	-15.96%	8.19%	11.06%	21.69%	-9.38%
VOOG Vanguard S&P 500 Growth ETF	12.80%	22.11%	35.89%	29.96%	-29.48%	31.95%	33.35%	30.93%	-10.97%

Correlation

The correlation between FZILX and VOOG is 0.74, 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	0.74
Correlation (3Y) Calculated over the trailing 3-year period	0.65
Correlation (5Y) Calculated over the trailing 5-year period	0.69
Correlation (All Time) Calculated using the full available price history since Aug 16, 2018	0.71

The correlation between FZILX and VOOG has been stable across timeframes, ranging from 0.65 to 0.74 - a consistent structural relationship.

Return for Risk

FZILX vs. VOOG — Risk / Return Rank

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

FZILX

FZILX Risk / Return Rank: 58
FZILX Sharpe Ratio Rank: 58
FZILX Sortino Ratio Rank: 53
FZILX Omega Ratio Rank: 59
FZILX Calmar Ratio Rank: 61
FZILX Martin Ratio Rank: 58

VOOG

VOOG Risk / Return Rank: 62
VOOG Sharpe Ratio Rank: 68
VOOG Sortino Ratio Rank: 64
VOOG Omega Ratio Rank: 64
VOOG Calmar Ratio Rank: 53
VOOG Martin Ratio Rank: 60

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.

FZILX vs. VOOG - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity ZERO International Index Fund (FZILX) and Vanguard S&P 500 Growth ETF (VOOG). 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.

	FZILX	VOOG	Difference
Sharpe ratio: Return per unit of total volatility	1.90	1.97	-0.06
Sortino ratio: Return per unit of downside risk	2.60	2.64	-0.04
Omega ratio: Gain probability vs. loss probability	1.36	1.34	+0.01
Calmar ratio: Return relative to maximum drawdown	2.64	2.40	+0.23
Martin ratio: Return relative to average drawdown	10.15	9.66	+0.49

FZILX vs. VOOG - Sharpe Ratio Comparison

The current FZILX Sharpe Ratio is 1.90, which is comparable to the VOOG Sharpe Ratio of 1.97. The chart below compares the historical Sharpe Ratios of FZILX and VOOG, 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

FZILX vs. VOOG - Drawdown Comparison

The maximum FZILX drawdown since its inception was -34.37%, which is greater than VOOG's maximum drawdown of -32.73%. Use the drawdown chart below to compare losses from any high point for FZILX and VOOG.

Drawdown Indicators

	FZILX	VOOG	Difference
Max Drawdown Largest peak-to-trough decline	-34.37%	-32.73%	-1.64%
Max Drawdown (1Y) Largest decline over 1 year	-11.24%	-13.71%	+2.47%
Max Drawdown (3Y) Largest decline over 3 years	-13.47%	-22.18%	+8.71%
Max Drawdown (5Y) Largest decline over 5 years	-29.87%	-32.73%	+2.86%
Max Drawdown (10Y) Largest decline over 10 years	—	-32.73%	—
Current Drawdown Current decline from peak	-1.58%	-1.93%	+0.35%
Average Drawdown Average peak-to-trough decline	-6.68%	-4.96%	-1.72%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.92%	3.41%	-0.49%

Volatility

FZILX vs. VOOG - Volatility Comparison

Fidelity ZERO International Index Fund (FZILX) and Vanguard S&P 500 Growth ETF (VOOG) have volatilities of 6.65% and 6.82%, 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

	FZILX	VOOG	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.65%	6.82%	-0.17%
Volatility (6M) Calculated over the trailing 6-month period	13.40%	13.71%	-0.31%
Volatility (1Y) Calculated over the trailing 1-year period	15.59%	16.80%	-1.21%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	15.70%	21.33%	-5.63%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.39%	20.81%	-3.42%

FZILX vs. VOOG - Expense Ratio Comparison

FZILX has a 0.00% expense ratio, which is lower than VOOG's 0.07% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

FZILX vs. VOOG - Dividend Comparison

FZILX's dividend yield for the trailing twelve months is around 2.34%, more than VOOG's 0.44% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FZILX Fidelity ZERO International Index Fund	2.34%	2.67%	3.00%	2.98%	2.71%	2.61%	1.64%	2.37%	0.02%	0.00%	0.00%	0.00%
VOOG Vanguard S&P 500 Growth ETF	0.44%	0.49%	0.49%	1.12%	0.93%	0.53%	0.88%	1.26%	1.34%	1.32%	1.47%	1.56%

Frequently Asked Questions

Can I hold both FZILX and VOOG in my portfolio?

FZILX and VOOG have a correlation of 0.74, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FZILX or VOOG?

VOOG has higher volatility (6.82%) compared to FZILX (6.65%). In terms of maximum drawdown, FZILX dropped -34.37% vs VOOG's -32.73%.

Which has better risk-adjusted returns?

VOOG currently has the higher Sharpe Ratio (1.97 vs 1.90), 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.