FZIPX vs. VEMPX

Last updated Jun 25, 2026

FZIPX (Fidelity ZERO Extended Market Index Fund) and VEMPX (Vanguard Extended Market Index Fund Institutional Plus Shares) are both Mid Cap Blend Equities funds. Over the past 5 years, FZIPX returned 7.59%/yr vs 6.02%/yr for VEMPX. With a 0.97 correlation, they move nearly in lockstep. FZIPX charges 0.00%/yr vs 0.04%/yr for VEMPX.

Performance

FZIPX vs. VEMPX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity ZERO Extended Market Index Fund (FZIPX) and Vanguard Extended Market Index Fund Institutional Plus Shares (VEMPX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FZIPX achieves a 16.59% return, which is significantly higher than VEMPX's 14.62% return.

FZIPX

• 1D: -0.62%
• 1M: 2.56%
• YTD: 16.59%
• 6M: 13.88%
• 1Y: 31.27%
• 3Y*: 18.50%
• 5Y*: 7.59%
• 10Y*: —

VEMPX

• 1D: -0.82%
• 1M: 3.44%
• YTD: 14.62%
• 6M: 12.05%
• 1Y: 26.47%
• 3Y*: 19.96%
• 5Y*: 6.02%
• 10Y*: 12.55%

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

FZIPX vs. VEMPX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
FZIPX Fidelity ZERO Extended Market Index Fund	16.59%	12.51%	12.39%	18.13%	-18.01%	21.31%	16.64%	26.50%	-17.57%
VEMPX Vanguard Extended Market Index Fund Institutional Plus Shares	14.62%	11.43%	15.50%	26.98%	-26.45%	12.48%	32.24%	28.06%	-17.99%

Correlation

The correlation between FZIPX and VEMPX is 0.98 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.98
Correlation (3Y) Calculated over the trailing 3-year period	0.97
Correlation (5Y) Calculated over the trailing 5-year period	0.97
Correlation (All Time) Calculated using the full available price history since Sep 28, 2018	0.97

The correlation between FZIPX and VEMPX has been stable across timeframes, ranging from 0.97 to 0.98 - a consistent structural relationship.

Return for Risk

FZIPX vs. VEMPX — Risk / Return Rank

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

FZIPX

FZIPX Risk / Return Rank: 58
FZIPX Sharpe Ratio Rank: 48
FZIPX Sortino Ratio Rank: 48
FZIPX Omega Ratio Rank: 42
FZIPX Calmar Ratio Rank: 80
FZIPX Martin Ratio Rank: 74

VEMPX

VEMPX Risk / Return Rank: 42
VEMPX Sharpe Ratio Rank: 36
VEMPX Sortino Ratio Rank: 35
VEMPX Omega Ratio Rank: 32
VEMPX Calmar Ratio Rank: 58
VEMPX Martin Ratio Rank: 50

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.

FZIPX vs. VEMPX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity ZERO Extended Market Index Fund (FZIPX) and Vanguard Extended Market Index Fund Institutional Plus Shares (VEMPX). 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.

	FZIPX	VEMPX	Difference
Sharpe ratio: Return per unit of total volatility	1.89	1.60	+0.29
Sortino ratio: Return per unit of downside risk	2.68	2.25	+0.42
Omega ratio: Gain probability vs. loss probability	1.32	1.27	+0.05
Calmar ratio: Return relative to maximum drawdown	3.43	2.78	+0.65
Martin ratio: Return relative to average drawdown	13.06	9.75	+3.31

FZIPX vs. VEMPX - Sharpe Ratio Comparison

The current FZIPX Sharpe Ratio is 1.89, which is comparable to the VEMPX Sharpe Ratio of 1.60. The chart below compares the historical Sharpe Ratios of FZIPX and VEMPX, 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

FZIPX vs. VEMPX - Drawdown Comparison

The maximum FZIPX drawdown since its inception was -42.71%, roughly equal to the maximum VEMPX drawdown of -41.62%. Use the drawdown chart below to compare losses from any high point for FZIPX and VEMPX.

Drawdown Indicators

	FZIPX	VEMPX	Difference
Max Drawdown Largest peak-to-trough decline	-42.71%	-41.62%	-1.09%
Max Drawdown (1Y) Largest decline over 1 year	-9.61%	-10.25%	+0.64%
Max Drawdown (3Y) Largest decline over 3 years	-25.16%	-26.83%	+1.67%
Max Drawdown (5Y) Largest decline over 5 years	-28.19%	-36.32%	+8.13%
Max Drawdown (10Y) Largest decline over 10 years	—	-41.62%	—
Current Drawdown Current decline from peak	-0.73%	-1.06%	+0.33%
Average Drawdown Average peak-to-trough decline	-8.86%	-7.94%	-0.92%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.52%	2.92%	-0.40%

Volatility

FZIPX vs. VEMPX - Volatility Comparison

The current volatility for Fidelity ZERO Extended Market Index Fund (FZIPX) is 5.03%, while Vanguard Extended Market Index Fund Institutional Plus Shares (VEMPX) has a volatility of 6.17%. This indicates that FZIPX experiences smaller price fluctuations and is considered to be less risky than VEMPX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FZIPX	VEMPX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.03%	6.17%	-1.14%
Volatility (6M) Calculated over the trailing 6-month period	12.87%	13.31%	-0.44%
Volatility (1Y) Calculated over the trailing 1-year period	17.46%	17.83%	-0.37%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	20.98%	22.45%	-1.47%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	23.79%	22.38%	+1.41%

FZIPX vs. VEMPX - Expense Ratio Comparison

FZIPX has a 0.00% expense ratio, which is lower than VEMPX's 0.04% 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

FZIPX vs. VEMPX - Dividend Comparison

FZIPX's dividend yield for the trailing twelve months is around 1.07%, more than VEMPX's 1.02% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FZIPX Fidelity ZERO Extended Market Index Fund	1.07%	1.24%	1.22%	1.43%	1.64%	6.97%	2.15%	1.80%	0.50%	0.00%	0.00%	0.00%
VEMPX Vanguard Extended Market Index Fund Institutional Plus Shares	1.02%	1.15%	1.11%	1.27%	1.17%	1.15%	1.09%	1.32%	1.68%	1.27%	1.46%	1.39%

Frequently Asked Questions

Can I hold both FZIPX and VEMPX in my portfolio?

With a correlation of 0.98, FZIPX and VEMPX 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, FZIPX or VEMPX?

VEMPX has higher volatility (6.17%) compared to FZIPX (5.03%). In terms of maximum drawdown, FZIPX dropped -42.71% vs VEMPX's -41.62%.

Which has better risk-adjusted returns?

FZIPX currently has the higher Sharpe Ratio (1.89 vs 1.60), 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.