Do call prices and the underlying stock always move in the same direction?

Gurdip Bakshi, Charles Cao, Zhiwu Chen

Research output: Contribution to journalArticlepeer-review

91 Scopus citations


This article empirically analyzes some properties shared by all one-dimensional diffusion option models. Using S&P 500 options, we find that sampled intraday (or interday) call (put) prices often go down (up) even as the underlying price goes up, and 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.

Original languageEnglish (US)
Pages (from-to)549-584
Number of pages36
JournalReview of Financial Studies
Issue number3
StatePublished - 2000

All Science Journal Classification (ASJC) codes

  • Accounting
  • Finance
  • Economics and Econometrics


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