Do Call Prices and the Underlying Stock Always Move in the Same Direction?
This article empirically analyzes some properties shared by all one-dimensional diffusion option models. Using S&P 500 options, we find that when sampled intraday (or inter-day), (i) call (put) prices often go down (up) even as the underlying price goes up, and (ii) call and put prices often increase, or decrease, together. Our results are valid after controlling for time-decay and market microstructure effects. Therefore, one-dimensional diffusion option models cannot be completely consistent with observed option-price dynamics; options are not redundant securities, nor ideal hedging instruments---puts and the underlying asset prices may go down together.
|Date of creation:||14 Oct 1999|
|Date of revision:|
|Contact details of provider:|| Web page: http://icf.som.yale.edu/|
More information through EDIRC
When requesting a correction, please mention this item's handle: RePEc:ysm:somwrk:ysm125. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: ()
If references are entirely missing, you can add them using this form.