IDEAS home Printed from
   My bibliography  Save this paper

A Dynamic Model of the Incorporation of New Information into Prices


  • Charles Geiss

    (University of Missouri-Columbia)

  • Kyung-Seong Jeon

    (University of Missouri-Columbia)


A representative investor in a competitive financial market is uncertain about the true state of the economy. This uncertainty is reflected by a probability distribution of values which the investor forms subjectively based on information that is arriving randomly. The subjective distribution of values is updated by the investor's learning process, which systematically lowers the perceived probability of events economically different from the latest news and increases the believed likelihood of values consistent with this information. By following this learning process, the investor's subjective distribution becomes identical (in an expected sense) to the true distribution of values. The model shows that if there is a regime shift in the true world, the subjective distribution begins an adjustment process which ends again with the true and subjective distributions equal. In increase in real volatility causes no change in the expected subjective mean, but induces an increase in the volatility of the subjective probability function. An increase in the mean of the true world causes the subjective mean to increase, but also causes a temporary increase in the subjective volatility.

Suggested Citation

  • Charles Geiss & Kyung-Seong Jeon, 1998. "A Dynamic Model of the Incorporation of New Information into Prices," Finance 9805006, EconWPA.
  • Handle: RePEc:wpa:wuwpfi:9805006
    Note: 24 pages, WordPerfect 8

    Download full text from publisher

    File URL:
    Download Restriction: no

    File URL:
    Download Restriction: no

    File URL:
    Download Restriction: no

    File URL:
    Download Restriction: no

    More about this item

    JEL classification:

    • D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search; Learning; Information and Knowledge; Communication; Belief; Unawareness
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading

    NEP fields

    This paper has been announced in the following NEP Reports:


    Access and download statistics


    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:wpa:wuwpfi:9805006. 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: (EconWPA). General contact details of provider: .

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service hosted by the Research Division of the Federal Reserve Bank of St. Louis . RePEc uses bibliographic data supplied by the respective publishers.