Advanced Search
MyIDEAS: Login

The efficient market hypothesis re-visited: new evidence from 100 US firms

Contents:

Author Info

  • Ruipeng Liu

    ()

  • Paresh Kumar Narayan

    ()

Abstract

In this paper, we test the efficient market hypothesis for 100 US firms listed on the New York Stock Exchange. To test the unit root null hypothesis, we develop a generalized autoregressive heteroskedasticity (GARCH) model that not only caters for the GARCH errors but also allows for two endogenous structural breaks in the data series. We study the size and power properties of the proposed GARCH structural break unit root test and find that it statistically performs well in finite samples. We find that only 22% of firms have a stationary stock price series.

Download Info

If you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
File URL: http://www.deakin.edu.au/buslaw/aef/workingpapers/fin-econometrics/2011_08
Download Restriction: no

Bibliographic Info

Paper provided by Deakin University, Faculty of Business and Law, School of Accounting, Economics and Finance in its series Financial Econometics Series with number 2011_08.

as in new window
Length: 34
Date of creation:
Date of revision:
Handle: RePEc:dkn:ecomet:fe_2011_08

Contact details of provider:
Postal: 221 Burwood Highway, Burwood 3125
Phone: 61 3 9244 3815
Web page: http://www.deakin.edu.au/buslaw/aef/index.php

Related research

Keywords: Efficient market hypothesis; GARCH; unit root; structural break; stock price;

References

No references listed on IDEAS
You can help add them by filling out this form.

Citations

Lists

This item is not listed on Wikipedia, on a reading list or among the top items on IDEAS.

Statistics

Access and download statistics

Corrections

When requesting a correction, please mention this item's handle: RePEc:dkn:ecomet:fe_2011_08. 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: (Dr Susan S Sharma).

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.

If references are entirely missing, you can add them using this form.

If the full references list an item that is present in RePEc, but the system did not link to it, you can help with 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 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.