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SWPPX vs. VIIIX
Performance
Return for Risk
Drawdowns
Volatility
Dividends

SWPPX vs. VIIIX

Last updated Jun 4, 2026

SWPPX (Schwab S&P 500 Index Fund) and VIIIX (Vanguard Institutional Index Fund Institutional Plus Shares) are both mutual funds - SWPPX is a Large Cap Blend Equities fund tracking the S&P 500 Index, while VIIIX is a S&P 500 fund tracking the S&P 500 Index. Both are passively managed. Over the past 10 years, SWPPX returned 15.63%/yr vs 15.74%/yr for VIIIX. With a 1.00 correlation, they move nearly in lockstep. Both charge a 0.02% expense ratio.

Performance

SWPPX vs. VIIIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Schwab S&P 500 Index Fund (SWPPX) and Vanguard Institutional Index Fund Institutional Plus Shares (VIIIX). The values are adjusted to include any dividend payments, if applicable.

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Returns By Period

The year-to-date returns for both investments are quite close, with SWPPX having a 11.69% return and VIIIX slightly higher at 11.70%. Both investments have delivered pretty close results over the past 10 years, with SWPPX having a 15.63% annualized return and VIIIX not far ahead at 15.74%.

SWPPX

1D
0.15%
1M
5.83%
YTD
11.69%
6M
11.71%
1Y
28.97%
3Y*
22.73%
5Y*
14.26%
10Y*
15.63%

VIIIX

1D
0.13%
1M
5.80%
YTD
11.70%
6M
11.74%
1Y
28.99%
3Y*
23.17%
5Y*
14.42%
10Y*
15.74%
*Multi-year figures are annualized to reflect compound growth (CAGR)

SWPPX vs. VIIIX - Yearly Performance Comparison

2026 (YTD)202520242023202220212020201920182017
SWPPX
Schwab S&P 500 Index Fund		11.69%17.87%24.96%26.26%-18.14%28.67%18.38%31.46%-4.47%21.81%
VIIIX
Vanguard Institutional Index Fund Institutional Plus Shares		11.70%17.87%26.29%25.79%-18.14%28.69%18.41%31.48%-4.41%21.82%

Correlation

The correlation between SWPPX and VIIIX is 1.00 - 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

1.00

Correlation (3Y)
Calculated over the trailing 3-year period

0.99

Correlation (5Y)
Calculated over the trailing 5-year period

1.00

Correlation (10Y)
Calculated over the trailing 10-year period

1.00

Correlation (All Time)
Calculated using the full available price history since Jul 8, 1997

1.00

The correlation between SWPPX and VIIIX has been stable across timeframes, ranging from 0.99 to 1.00 - a consistent structural relationship.

SWPPX vs. VIIIX - Sectors Allocation Comparison

Sectors
SWPPX
VIIIX

Technology

35.6%
35.5%

Financial Services

11.8%
11.6%

Communication Services

11.2%
11.1%

Consumer Cyclical

10.1%
10.0%

Healthcare

8.5%
8.5%

Industrials

8.3%
8.0%

Consumer Defensive

4.9%
4.9%

Energy

3.5%
3.5%

Utilities

2.4%
2.8%

Real Estate

1.9%
1.9%

Basic Materials

1.8%
1.8%

Technology

SWPPX
35.6%
VIIIX
35.5%

Financial Services

SWPPX
11.8%
VIIIX
11.6%

Communication Services

SWPPX
11.2%
VIIIX
11.1%

Consumer Cyclical

SWPPX
10.1%
VIIIX
10.0%

Healthcare

SWPPX
8.5%
VIIIX
8.5%

Industrials

SWPPX
8.3%
VIIIX
8.0%

Consumer Defensive

SWPPX
4.9%
VIIIX
4.9%

Energy

SWPPX
3.5%
VIIIX
3.5%

Utilities

SWPPX
2.4%
VIIIX
2.8%

Real Estate

SWPPX
1.9%
VIIIX
1.9%

Basic Materials

SWPPX
1.8%
VIIIX
1.8%

Compare stocks, funds, or ETFs

Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.

Schwab S&P 500 Index Fund

Vanguard Institutional Index Fund Institutional Plus Shares

Often compared with SWPPX:
SWPPX vs. VOOSWPPX vs. SWTSXSWPPX vs. SCHXSWPPX vs. SCHDSWPPX vs. SWLGXSWPPX vs. SNXFXSWPPX vs. QQQ
Often compared with VIIIX:
VIIIX vs. VIGIXVIIIX vs. SPYVIIIX vs. OIEJXVIIIX vs. VTSNXVIIIX vs. VTIVIIIX vs. VEMPXVIIIX vs. VFIFX

Return for Risk

SWPPX vs. VIIIX — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.
SWPPX
SWPPX Risk / Return Rank: 7373
Overall Rank
SWPPX Sharpe Ratio Rank: 7575
Sharpe Ratio Rank
SWPPX Sortino Ratio Rank: 6767
Sortino Ratio Rank
SWPPX Omega Ratio Rank: 6767
Omega Ratio Rank
SWPPX Calmar Ratio Rank: 7474
Calmar Ratio Rank
SWPPX Martin Ratio Rank: 8383
Martin Ratio Rank
VIIIX
VIIIX Risk / Return Rank: 7373
Overall Rank
VIIIX Sharpe Ratio Rank: 7676
Sharpe Ratio Rank
VIIIX Sortino Ratio Rank: 6767
Sortino Ratio Rank
VIIIX Omega Ratio Rank: 6767
Omega Ratio Rank
VIIIX Calmar Ratio Rank: 7474
Calmar Ratio Rank
VIIIX Martin Ratio Rank: 8383
Martin Ratio Rank
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.

SWPPX vs. VIIIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Schwab S&P 500 Index Fund (SWPPX) 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.

SWPPXVIIIXDifference
Sharpe ratioReturn per unit of total volatility
2.52
2.52

0.00

Sortino ratioReturn per unit of downside risk
3.41
3.42

-0.01

Omega ratioGain probability vs. loss probability

1.46

1.46

0.00

Calmar ratioReturn relative to maximum drawdown

3.36

3.36

0.00

Martin ratioReturn relative to average drawdown

15.67

15.69

-0.02

Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

SWPPX vs. VIIIX - Sharpe Ratio Comparison

The current SWPPX Sharpe Ratio is 2.52, which is comparable to the VIIIX Sharpe Ratio of 2.52. The chart below compares the historical Sharpe Ratios of SWPPX 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.

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Sharpe Ratios by Period

SWPPXVIIIXDifference

Sharpe Ratio (1Y)

Calculated over the trailing 1-year period

2.52

2.52

0.00

Sharpe Ratio (5Y)

Calculated over the trailing 5-year period

0.85

0.86

-0.01

Sharpe Ratio (10Y)

Calculated over the trailing 10-year period

0.86

0.87

-0.01

Sharpe Ratio (All Time)

Calculated using the full available price history

0.51

0.50

+0.02

Drawdowns

SWPPX vs. VIIIX - Drawdown Comparison

The maximum SWPPX drawdown since its inception was -55.06%, roughly equal to the maximum VIIIX drawdown of -55.18%. Use the drawdown chart below to compare losses from any high point for SWPPX and VIIIX.

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Drawdown Indicators

SWPPXVIIIXDifference

Max Drawdown

Largest peak-to-trough decline

-55.06%

-55.18%

+0.12%

Max Drawdown (1Y)

Largest decline over 1 year

-8.89%

-8.90%

+0.01%

Max Drawdown (3Y)

Largest decline over 3 years

-18.74%

-18.75%

+0.01%

Max Drawdown (5Y)

Largest decline over 5 years

-24.51%

-24.50%

-0.01%

Max Drawdown (10Y)

Largest decline over 10 years

-33.80%

-33.79%

-0.01%

Current Drawdown

Current decline from peak

0.00%

0.00%

0.00%

Average Drawdown

Average peak-to-trough decline

-9.95%

-10.02%

+0.07%

Ulcer Index

Depth and duration of drawdowns from previous peaks

1.90%

1.90%

0.00%

Volatility

SWPPX vs. VIIIX - Volatility Comparison

Schwab S&P 500 Index Fund (SWPPX) and Vanguard Institutional Index Fund Institutional Plus Shares (VIIIX) have volatilities of 2.83% and 2.83%, 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.

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Volatility by Period

SWPPXVIIIXDifference

Volatility (1M)

Calculated over the trailing 1-month period

2.83%

2.83%

0.00%

Volatility (6M)

Calculated over the trailing 6-month period

8.98%

8.97%

+0.01%

Volatility (1Y)

Calculated over the trailing 1-year period

11.87%

11.86%

+0.01%

Volatility (5Y)

Calculated over the trailing 5-year period, annualized

16.93%

16.89%

+0.04%

Volatility (10Y)

Calculated over the trailing 10-year period, annualized

18.23%

18.06%

+0.17%

SWPPX vs. VIIIX - Expense Ratio Comparison

Both SWPPX and VIIIX have an expense ratio of 0.02%, making them cost-effective options compared to the broader market, where average expense ratios typically range from 0.3% to 0.9%.

Dividends

SWPPX vs. VIIIX - Dividend Comparison

SWPPX's dividend yield for the trailing twelve months is around 0.99%, less than VIIIX's 2.41% yield.

PositionTTM20252024202320222021202020192018201720162015
SWPPX
Schwab S&P 500 Index Fund		0.99%1.11%1.23%1.43%1.67%1.27%1.81%1.95%2.67%1.79%2.55%3.17%
VIIIX
Vanguard Institutional Index Fund Institutional Plus Shares		2.41%2.11%3.66%2.66%3.39%4.79%3.07%2.86%2.45%1.84%2.38%2.47%

Frequently Asked Questions

With a correlation of 1.00, SWPPX and VIIIX 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.

VIIIX has higher volatility (2.83%) compared to SWPPX (2.83%). In terms of maximum drawdown, SWPPX dropped -55.06% vs VIIIX's -55.18%.

VIIIX currently has the higher Sharpe Ratio (2.52 vs 2.52), 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.

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