Fedyk, Yuriy (Olin School of Business) Walden, Johan () (Haas School of Business)
Abstract
Recent research has suggested that natural selection in financial markets may be a very slow process, taking hundreds of years. We show in a general equilibrium model that it may be much faster in markets with large state spaces. In many cases, the time it takes to wipe out irrational investors is inversely proportional to the number of stocks in the market, i.e., if it takes about 500 years with one stock, it takes about one year with 500 stocks. Thus, theoretically, natural selection can be very efficient even when there is high market uncertainty. The speed of the natural selection process is a known function of irrational investors' sentiment and of the real characteristics of the stock market. According to a calibration to U.S. stock data, it takes about fifty years for an irrational investor to be wiped out. This is in line with studies of individual investor underperformance.
Download Info
To download:
If you experience problems downloading a file, check if you have the
proper application to
view it first. Information about this may be contained
in the File-Format links below. 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.
Publisher Info
Paper provided by Institute for Financial Research in its series SIFR Research Report Series with number
52.
Length: 38 pages Date of creation: 15 Apr 2007 Date of revision: Handle: RePEc:hhs:sifrwp:0052
Contact details of provider: Postal: Institute for Financial Research Drottninggatan 89, SE-113 60 Stockholm, Sweden Phone: +46-8-728-5120 Fax: +46-8-728-5130 Email: Web page: http://www.sifr.org/ More information through EDIRC
For technical questions regarding this item, or to correct its listing, contact: (Anki Helmer).
References listed on IDEAS Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.: