VNQ vs. VIIIX

Last updated Jun 14, 2026

VNQ (Vanguard Real Estate ETF) and VIIIX (Vanguard Institutional Index Fund Institutional Plus Shares) are both funds - VNQ is a REIT fund tracking the MSCI US Investable Market Real Estate 25/50 Index, while VIIIX is a S&P 500 fund tracking the S&P 500 Index. Both are passively managed. Over the past 10 years, VNQ returned 5.65%/yr vs 15.51%/yr for VIIIX. A 0.65 correlation means they provide meaningful diversification when combined. VNQ charges 0.13%/yr vs 0.02%/yr for VIIIX.

Performance

VNQ vs. VIIIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard Real Estate ETF (VNQ) and Vanguard Institutional Index Fund Institutional Plus Shares (VIIIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, VNQ achieves a 12.51% return, which is significantly higher than VIIIX's 8.59% return. Over the past 10 years, VNQ has underperformed VIIIX with an annualized return of 5.65%, while VIIIX has yielded a comparatively higher 15.51% annualized return.

VNQ

• 1D: 0.92%
• 1M: 3.35%
• YTD: 12.51%
• 6M: 12.32%
• 1Y: 14.02%
• 3Y*: 10.14%
• 5Y*: 2.55%
• 10Y*: 5.65%

VIIIX

• 1D: 1.75%
• 1M: -1.31%
• YTD: 8.59%
• 6M: 8.94%
• 1Y: 25.18%
• 3Y*: 21.47%
• 5Y*: 13.48%
• 10Y*: 15.51%

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

VNQ vs. VIIIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
VNQ Vanguard Real Estate ETF	12.51%	3.24%	4.81%	11.85%	-26.25%	40.54%	-4.61%	28.91%	-6.03%	4.90%
VIIIX Vanguard Institutional Index Fund Institutional Plus Shares	8.59%	17.87%	26.29%	25.79%	-18.14%	28.69%	18.41%	31.48%	-4.41%	21.82%

Correlation

The correlation between VNQ and VIIIX is 0.32, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.32
Correlation (3Y) Calculated over the trailing 3-year period	0.48
Correlation (5Y) Calculated over the trailing 5-year period	0.60
Correlation (10Y) Calculated over the trailing 10-year period	0.57
Correlation (All Time) Calculated using the full available price history since Sep 29, 2004	0.65

Over the past year, the correlation between VNQ and VIIIX has dropped to 0.32 - well below their long-term average of 0.65, suggesting their price drivers have been diverging.

Return for Risk

VNQ vs. VIIIX — Risk / Return Rank

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

VNQ

VNQ Risk / Return Rank: 32
VNQ Sharpe Ratio Rank: 30
VNQ Sortino Ratio Rank: 28
VNQ Omega Ratio Rank: 28
VNQ Calmar Ratio Rank: 35
VNQ Martin Ratio Rank: 36

VIIIX

VIIIX Risk / Return Rank: 73
VIIIX Sharpe Ratio Rank: 72
VIIIX Sortino Ratio Rank: 68
VIIIX Omega Ratio Rank: 69
VIIIX Calmar Ratio Rank: 73
VIIIX Martin Ratio Rank: 83

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.

VNQ vs. VIIIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard Real Estate ETF (VNQ) and Vanguard Institutional Index Fund Institutional Plus Shares (VIIIX). 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.

	VNQ	VIIIX	Difference
Sharpe ratio: Return per unit of total volatility	0.96	1.97	-1.01
Sortino ratio: Return per unit of downside risk	1.39	2.67	-1.28
Omega ratio: Gain probability vs. loss probability	1.17	1.36	-0.19
Calmar ratio: Return relative to maximum drawdown	1.56	2.74	-1.18
Martin ratio: Return relative to average drawdown	4.90	12.45	-7.55

VNQ vs. VIIIX - Sharpe Ratio Comparison

The current VNQ Sharpe Ratio is 0.96, which is lower than the VIIIX Sharpe Ratio of 1.97. The chart below compares the historical Sharpe Ratios of VNQ and VIIIX, 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

VNQ vs. VIIIX - Drawdown Comparison

The maximum VNQ drawdown since its inception was -73.07%, which is greater than VIIIX's maximum drawdown of -55.18%. Use the drawdown chart below to compare losses from any high point for VNQ and VIIIX.

Drawdown Indicators

	VNQ	VIIIX	Difference
Max Drawdown Largest peak-to-trough decline	-73.07%	-55.18%	-17.89%
Max Drawdown (1Y) Largest decline over 1 year	-8.34%	-8.90%	+0.56%
Max Drawdown (3Y) Largest decline over 3 years	-17.46%	-18.75%	+1.29%
Max Drawdown (5Y) Largest decline over 5 years	-34.48%	-24.50%	-9.98%
Max Drawdown (10Y) Largest decline over 10 years	-42.40%	-33.79%	-8.61%
Current Drawdown Current decline from peak	0.00%	-2.79%	+2.79%
Average Drawdown Average peak-to-trough decline	-13.61%	-10.01%	-3.60%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.65%	1.95%	+0.70%

Volatility

VNQ vs. VIIIX - Volatility Comparison

Vanguard Real Estate ETF (VNQ) has a higher volatility of 4.72% compared to Vanguard Institutional Index Fund Institutional Plus Shares (VIIIX) at 4.44%. This indicates that VNQ's price experiences larger fluctuations and is considered to be riskier than VIIIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VNQ	VIIIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.72%	4.44%	+0.28%
Volatility (6M) Calculated over the trailing 6-month period	9.77%	9.70%	+0.07%
Volatility (1Y) Calculated over the trailing 1-year period	13.54%	12.37%	+1.17%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.84%	16.97%	+1.87%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.72%	18.09%	+2.63%

VNQ vs. VIIIX - Expense Ratio Comparison

VNQ has a 0.13% expense ratio, which is higher than VIIIX's 0.02% 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

VNQ vs. VIIIX - Dividend Comparison

VNQ's dividend yield for the trailing twelve months is around 3.54%, more than VIIIX's 2.48% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
VIIIX Vanguard Institutional Index Fund Institutional Plus Shares	2.48%	2.11%	3.66%	2.66%	3.39%	4.79%	3.07%	2.86%	2.45%	1.84%	2.38%	2.47%
VNQ Vanguard Real Estate ETF	3.54%	3.92%	3.85%	3.95%	3.91%	2.56%	3.93%	3.39%	4.74%	4.23%	4.82%	3.92%

Frequently Asked Questions

Can I hold both VNQ and VIIIX in my portfolio?

VNQ and VIIIX have a correlation of 0.32, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, VNQ or VIIIX?

VNQ has higher volatility (4.72%) compared to VIIIX (4.44%). In terms of maximum drawdown, VNQ dropped -73.07% vs VIIIX's -55.18%.

Which has better risk-adjusted returns?

VIIIX currently has the higher Sharpe Ratio (1.97 vs 0.96), 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.