IDEAS home Printed from
   My bibliography  Save this paper

Why Do Security Prices Change? A Transaction-Level Analysis of NYSE Stocks


  • Ananth Madhavan
  • Matthew Richardson
  • Mark Roomans


This paper develops a structural model of intraday price formation that embodies both public information shocks and microstructure effects. Due to its structural nature, the model’s underlying parameters provide summary measures to asset trading costs, the sources of short-run price volatility, and the speed of price discovery in an internally consistent, unified setting. We estimate the model using transaction level data for a cross-section of NYSE stocks. We find, for example, that the parameter estimates jointly explain the observed U-shaped pattern in quoted bid-ask spreads and in price volatility, the magnitude of transaction price volatility due to market frictions, and the autocorrelation patterns of transaction returns and quote revisions. Further, in contrast to bid-ask spread patterns, we find that execution costs of a trade are much smaller than the spread and increase monotonically over the course of the day. This may provide an explanation for why there is concentration in trade at the open.

Suggested Citation

  • Ananth Madhavan & Matthew Richardson & Mark Roomans, "undated". "Why Do Security Prices Change? A Transaction-Level Analysis of NYSE Stocks," Rodney L. White Center for Financial Research Working Papers 20-94, Wharton School Rodney L. White Center for Financial Research.
  • Handle: RePEc:fth:pennfi:20-94

    Download full text from publisher

    To our knowledge, this item is not available for download. To find whether it is available, there are three options:
    1. Check below whether another version of this item is available online.
    2. Check on the provider's web page whether it is in fact available.
    3. Perform a search for a similarly titled item that would be available.

    Other versions of this item:

    More about this item


    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:fth:pennfi:20-94. See general information about how to correct material in RePEc.

    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 bibliographic 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.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Thomas Krichel (email available below). General contact details of provider: .

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

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.