VWNAX vs. VIIIX

Last updated Jun 9, 2026

VWNAX (Vanguard Windsor II Fund Admiral Shares) and VIIIX (Vanguard Institutional Index Fund Institutional Plus Shares) are both mutual funds - VWNAX is a Large Cap Value Equities fund managed by Vanguard, while VIIIX is a S&P 500 fund tracking the S&P 500 Index. Over the past 10 years, VWNAX returned 12.63%/yr vs 15.32%/yr for VIIIX. With a 0.96 correlation, they move nearly in lockstep. VWNAX charges 0.26%/yr vs 0.02%/yr for VIIIX.

Performance

VWNAX vs. VIIIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard Windsor II Fund Admiral Shares (VWNAX) 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, VWNAX achieves a 6.06% return, which is significantly lower than VIIIX's 8.42% return. Over the past 10 years, VWNAX has underperformed VIIIX with an annualized return of 12.63%, while VIIIX has yielded a comparatively higher 15.32% annualized return.

VWNAX

• 1D: -1.32%
• 1M: 0.73%
• YTD: 6.06%
• 6M: 7.27%
• 1Y: 21.24%
• 3Y*: 17.18%
• 5Y*: 10.19%
• 10Y*: 12.63%

VIIIX

• 1D: -2.63%
• 1M: -0.08%
• YTD: 8.42%
• 6M: 8.48%
• 1Y: 24.54%
• 3Y*: 21.94%
• 5Y*: 13.54%
• 10Y*: 15.32%

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

VWNAX vs. VIIIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
VWNAX Vanguard Windsor II Fund Admiral Shares	6.06%	18.64%	13.99%	21.10%	-13.18%	28.95%	14.49%	29.16%	-8.57%	15.67%
VIIIX Vanguard Institutional Index Fund Institutional Plus Shares	8.42%	17.87%	26.29%	25.79%	-18.14%	28.69%	18.41%	31.48%	-4.41%	21.82%

Correlation

The correlation between VWNAX and VIIIX is 0.82, 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	0.82
Correlation (3Y) Calculated over the trailing 3-year period	0.88
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 May 15, 2001	0.96

The correlation between VWNAX and VIIIX shifts across timeframes, from 0.82 (1 year) to 0.96 (all time), reflecting how their relationship changes across market environments.

VWNAX vs. VIIIX - Sectors Allocation Comparison

Sectors	VWNAX	VIIIX
Technology	20.5%	35.7%
Financial Services	19.2%	11.6%
Healthcare	12.2%	8.5%
Industrials	10.1%	8.3%
Communication Services	8.1%	11.3%
Energy	7.0%	3.5%
Consumer Cyclical	6.9%	10.2%
Consumer Defensive	4.8%	4.9%
Basic Materials	4.7%	1.8%
Utilities	2.2%	2.4%
Real Estate	0.5%	1.9%

Return for Risk

VWNAX vs. VIIIX — Risk / Return Rank

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

VWNAX

VWNAX Risk / Return Rank: 54
VWNAX Sharpe Ratio Rank: 51
VWNAX Sortino Ratio Rank: 50
VWNAX Omega Ratio Rank: 47
VWNAX Calmar Ratio Rank: 61
VWNAX Martin Ratio Rank: 62

VIIIX

VIIIX Risk / Return Rank: 59
VIIIX Sharpe Ratio Rank: 56
VIIIX Sortino Ratio Rank: 49
VIIIX Omega Ratio Rank: 53
VIIIX Calmar Ratio Rank: 62
VIIIX Martin Ratio Rank: 75

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.

VWNAX vs. VIIIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard Windsor II Fund Admiral Shares (VWNAX) 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.

	VWNAX	VIIIX	Difference
Sharpe ratio: Return per unit of total volatility	2.02	2.13	-0.11
Sortino ratio: Return per unit of downside risk	2.84	2.87	-0.03
Omega ratio: Gain probability vs. loss probability	1.36	1.39	-0.03
Calmar ratio: Return relative to maximum drawdown	2.89	2.92	-0.03
Martin ratio: Return relative to average drawdown	11.78	13.57	-1.79
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

VWNAX vs. VIIIX - Sharpe Ratio Comparison

The current VWNAX Sharpe Ratio is 2.02, which is comparable to the VIIIX Sharpe Ratio of 2.13. The chart below compares the historical Sharpe Ratios of VWNAX 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.

Sharpe Ratios by Period

	VWNAX	VIIIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.02	2.13	-0.11
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.60	0.80	-0.20
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.69	0.85	-0.16
Sharpe Ratio (All Time) Calculated using the full available price history	0.46	0.49	-0.03

Drawdowns

VWNAX vs. VIIIX - Drawdown Comparison

The maximum VWNAX drawdown since its inception was -57.51%, roughly equal to the maximum VIIIX drawdown of -55.18%. Use the drawdown chart below to compare losses from any high point for VWNAX and VIIIX.

Drawdown Indicators

	VWNAX	VIIIX	Difference
Max Drawdown Largest peak-to-trough decline	-57.51%	-55.18%	-2.33%
Max Drawdown (1Y) Largest decline over 1 year	-7.85%	-8.90%	+1.05%
Max Drawdown (3Y) Largest decline over 3 years	-21.77%	-18.75%	-3.02%
Max Drawdown (5Y) Largest decline over 5 years	-22.70%	-24.50%	+1.80%
Max Drawdown (10Y) Largest decline over 10 years	-37.42%	-33.79%	-3.63%
Current Drawdown Current decline from peak	-1.32%	-2.94%	+1.62%
Average Drawdown Average peak-to-trough decline	-8.99%	-10.01%	+1.02%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.92%	1.91%	+0.01%

Volatility

VWNAX vs. VIIIX - Volatility Comparison

The current volatility for Vanguard Windsor II Fund Admiral Shares (VWNAX) is 2.96%, while Vanguard Institutional Index Fund Institutional Plus Shares (VIIIX) has a volatility of 3.81%. This indicates that VWNAX experiences smaller price fluctuations and is considered to be less risky than VIIIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VWNAX	VIIIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.96%	3.81%	-0.85%
Volatility (6M) Calculated over the trailing 6-month period	8.37%	9.41%	-1.04%
Volatility (1Y) Calculated over the trailing 1-year period	11.22%	12.19%	-0.97%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.02%	16.93%	+0.09%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.38%	18.08%	+0.30%

VWNAX vs. VIIIX - Expense Ratio Comparison

VWNAX has a 0.26% 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

VWNAX vs. VIIIX - Dividend Comparison

VWNAX's dividend yield for the trailing twelve months is around 10.89%, 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%
VWNAX Vanguard Windsor II Fund Admiral Shares	10.89%	11.55%	10.59%	5.19%	7.36%	7.92%	7.39%	10.15%	11.48%	7.38%	8.17%	8.05%

Frequently Asked Questions

Can I hold both VWNAX and VIIIX in my portfolio?

VWNAX and VIIIX have a correlation of 0.82, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, VWNAX or VIIIX?

VIIIX has higher volatility (3.81%) compared to VWNAX (2.96%). In terms of maximum drawdown, VWNAX dropped -57.51% vs VIIIX's -55.18%.

Which has better risk-adjusted returns?

VIIIX currently has the higher Sharpe Ratio (2.13 vs 2.02), 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.