The VIX Is Back To Pre-Crisis Lows. Does It Matter?

The CBOE Vix Index is a popular measure of the implied volatility of the S&P 500 index options, calculated and published by the Chicago Board Options Exchange.

The Sky – Is It Falling?

If you watch major business news channels, you may have recently heard that the last time the VIX fell to its current low coincided with the beginning of the Great Financial Crisis of 2007-2008 began.  It’s a sensational story line.

VIX

Shown below is a chart from the Sentieo platform with the S&P 500 Index (^GSPC) in light blue and the VIX Index in black.  The chart shows that the VIX has recently moved down to levels not seen since right before the financial crisis in 2008.  At the same time, the broad stock market appears unconcerned.

VIX

It’s a sobering historical comparison and, based on this data point alone, one might think that the S&P 500 Index is on the brink of sailing right back into the Bermuda Triangle of finance.

But does television chatter of a potential stock market selloff – premised solely on exceptionally low volatility – square with reality?

Fortunately, quick use of the Sentieo Plotter function shows that while the VIX and the S&P 500 do trade inversely, low volatility by itself is not at all a good predictor of stock returns.

The following is a regression analysis run using the Plotter function in Sentieo comparing the VIX Index vs. the S&P 500.

The r-squared is 0.67, and the coefficient is a healthy -7.02.  In fact, the VIX Index has a -0.82 correlation with the S&P 500 over this time period (of course, higher volatility is almost always associated with lower stock returns).

VIX

S&P 500 and VIX Index Regression analysis in Sentieo Plotter.

VIX

But Is Volatility Predictive?

One way to test the significance of volatility on forward returns is to lag one of the data series and re-run the regression with the lagged series.  Fortunately, this is easy to do in Sentieo’s Plotter: We simply lag the S&P 500 returns, as shown, using the “Axis Options” feature.  In this case, we’re lagging by a positive 8 weeks as shown.  Now when we re-run the regression we will see if a change in the VIX Index is associated with an 8-week-later change in stock prices.

VIX Index s&p 500 Index

Axis Options: add 8 weeks to the S&P 500.

The result?  After comparing the VIX Index with the following 8 weeks’ returns of the S&P 500, the R-squared between the two series actually drops from 0.67 to 0.24!  That is to say, based on this sample, that, while a significant coincident indicator of stock returns, the VIX Index is not a future indicator of returns.

VIX

Conclusion:

Tune out the TV chatter.  Try Sentieo and do your own homework.

It’s a great headline, but the analysis here suggests the VIX does not foretell another crisis.

Article by Sentieo



About the Author

Sentieo
As former hedge fund analysts, we are very familiar with the challenge of digging through an inhuman amount of information to find that one key data point that makes or breaks your investment thesis. With new datasets appearing daily, your job as an investor continues to grow more challenging and complex. This is why we built Sentieo. Sentieo is a financial data platform underpinned by the latest search technology. We overlay search, collaboration and automation on key aspects of an analyst's workflow so that you can spend less time searching and more time analyzing. Don’t take our word for it. We would love nothing more than to show you what we have built.