The New Oil Volatility Index: Falling Along With Crude Prices [View article]
Recent academic works seems to suggest that the negative correlation (of VIX with SPX) is due to non-normality behavior, in particular, the ability of asset prices to jump. For instance, here is a list of two papers from Journal of Finance:
(1) Eraker, Bjorn., 2004, Do Stock Prices and Volatility Jump? Reconciling Evidence from Spot and Option Prices, Journal of Finance 59, 1367-1403.
(2) Eraker, B., M. J. Johannes, and N. G. Polson, 2003, The Impact of Jumps in Returns and Volatility, Journal of Finance 53, 1269-1300.
Personally, I kind of view these papers as academic junk. Nevertheless, it is interested to see whether similar negative correlation will exist in commodities.
Too early to tell perhaps. Thanks for the interesting observation.
The New Oil Volatility Index: Falling Along With Crude Prices [View article]
(1) Eraker, Bjorn., 2004, Do Stock Prices and Volatility Jump? Reconciling Evidence from Spot and Option Prices, Journal of Finance 59, 1367-1403.
(2) Eraker, B., M. J. Johannes, and N. G. Polson, 2003, The Impact of Jumps in Returns and Volatility, Journal of Finance 53, 1269-1300.
Personally, I kind of view these papers as academic junk. Nevertheless, it is interested to see whether similar negative correlation will exist in commodities.
Too early to tell perhaps. Thanks for the interesting observation.