Correlation Between SPDR SP and Vanguard Index

Can any of the company-specific risk be diversified away by investing in both SPDR SP and Vanguard Index at the same time? Although using a correlation coefficient on its own may not help to predict future stock returns, this module helps to understand the diversifiable risk of combining SPDR SP and Vanguard Index into the same portfolio, which is an essential part of the fundamental portfolio management process.

By analyzing existing cross correlation between SPDR SP 500 and Vanguard Index Funds, you can compare the effects of market volatilities on SPDR SP and Vanguard Index and check how they will diversify away market risk if combined in the same portfolio for a given time horizon. You can also utilize pair trading strategies of matching a long position in SPDR SP with a short position of Vanguard Index. Check out your portfolio center. Please also check ongoing floating volatility patterns of SPDR SP and Vanguard Index.

Diversification Opportunities for SPDR SP and Vanguard Index

0.87

Correlation Coefficient

SPDR SP  Vanguard Index

Very poor diversification

The 3 months correlation between SPDR and Vanguard is 0.87. Overlapping area represents the amount of risk that can be diversified away by holding SPDR SP 500 and Vanguard Index Funds in the same portfolio, assuming nothing else is changed. The correlation between historical prices or returns on Vanguard Index Funds and SPDR SP is a relative statistical measure of the degree to which these equity instruments tend to move together. The correlation coefficient measures the extent to which returns on SPDR SP 500 are associated (or correlated) with Vanguard Index. Values of the correlation coefficient range from -1 to +1, where. The correlation of zero (0) is possible when the price movement of Vanguard Index Funds has no effect on the direction of SPDR SP i.e., SPDR SP and Vanguard Index go up and down completely randomly.

Pair Corralation between SPDR SP and Vanguard Index

Assuming the 90 days trading horizon SPDR SP 500 is expected to generate 0.81 times more return on investment than Vanguard Index. However, SPDR SP 500 is 1.23 times less risky than Vanguard Index. It trades about 0.26 of its potential returns per unit of risk. Vanguard Index Funds is currently generating about 0.11 per unit of risk. If you would invest  1,011,004  in SPDR SP 500 on April 20, 2025 and sell it today you would earn a total of  164,512  from holding SPDR SP 500 or generate 16.27% return on investment over 90 days.

Time Period	3 Months [change]
Direction	Moves Together
Strength	Strong
Accuracy	100.0%
Values	Daily Returns

SPDR SP 500  vs.  Vanguard Index Funds

SPDR SP 500

Risk-Adjusted Performance

Solid

Compared to the overall equity markets, risk-adjusted returns on investments in SPDR SP 500 are ranked lower than 20 (%) of all global equities and portfolios over the last 90 days. In spite of fairly weak basic indicators, SPDR SP showed solid returns over the last few months and may actually be approaching a breakup point.

Vanguard Index Funds

Risk-Adjusted Performance

OK

Compared to the overall equity markets, risk-adjusted returns on investments in Vanguard Index Funds are ranked lower than 8 (%) of all global equities and portfolios over the last 90 days. In spite of fairly unfluctuating primary indicators, Vanguard Index may actually be approaching a critical reversion point that can send shares even higher in August 2025.

Pair Trading with SPDR SP and Vanguard Index

The main advantage of trading using opposite SPDR SP and Vanguard Index positions is that it hedges away some unsystematic risk. Because of two separate transactions, even if SPDR SP position performs unexpectedly, Vanguard Index can make up some of the losses. Pair trading also minimizes risk from directional movements in the market. For example, if an entire industry or sector drops because of unexpected headlines, the short position in Vanguard Index will offset losses from the drop in Vanguard Index's long position.

The idea behind SPDR SP 500 and Vanguard Index Funds pairs trading is to make the combined position market-neutral, meaning the overall market's direction will not affect its win or loss (or potential downside or upside). This can be achieved by designing a pairs trade with two highly correlated stocks or equities that operate in a similar space or sector, making it possible to obtain profits through simple and relatively low-risk investment.

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Note that this page's information should be used as a complementary analysis to find the right mix of equity instruments to add to your existing portfolios or create a brand new portfolio. You can also try the Performance Analysis module to check effects of mean-variance optimization against your current asset allocation.