Markets for Information: Of Inefficient Firewalls and Efficient Monopolies
AbstractIn this paper we build a formal model to study market environments where information is costly to acquire and is of use also to potential competitors. In such situations a market for information may form, where reports - of unverifiable quality - over the information acquired are sold. A complete characterization of the equilibria of the game is provided. We find that information is acquired when its costs are not too high and in that case it is also sold, though reports are typically noisy. Also, the market for information tends to be a monopoly, and there is typically inefficiency given by underinvestment in information acquisition. Regulatory interventions in the form of firewalls, limiting the access to the sale of information to third parties, uninterested in trading the underlying object, only make the inefficiency worse. On the other hand, efficiency can be attained with a monopolist selling differentiated information, provided entry is blocked. The above findings hold when information has a prevalent horizontal differentiation component. When that is not the case, and the vertical differentiation element is more important, firewalls can in fact be beneficial.
Download InfoIf 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.
Bibliographic InfoPaper provided by CESifo Group Munich in its series CESifo Working Paper Series with number 2336.
Date of creation: 2008
Date of revision:
information acquisition; cheap talk; sale of information;
Other versions of this item:
- Antonio Cabrales & Piero Gottardi, 2008. "Markets for information : of inefficient firewalls and efficient monopolies," Economics Working Papers we080201, Universidad Carlos III, Departamento de Economía.
- Antonio Cabrales & Piero Gottardi, 2009. "Markets for Information: Of Inefficient Firewalls and Efficient Monopolies," Economics Working Papers ECO2009/11, European University Institute.
- Antonio Cabrales & Piero Gottardi, 2008. "Markets for Information: Of Inefficient Firewalls and Efficient Monopolies," Working Papers 2008_37, Department of Economics, University of Venice "Ca' Foscari".
- D80 - Microeconomics - - Information, Knowledge, and Uncertainty - - - General
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.:
- Crawford, Vincent P & Sobel, Joel, 1982.
"Strategic Information Transmission,"
Econometric Society, vol. 50(6), pages 1431-51, November.
- Michaely, Roni & Womack, Kent L, 1999. "Conflict of Interest and the Credibility of Underwriter Analyst Recommendations," Review of Financial Studies, Society for Financial Studies, vol. 12(4), pages 653-86.
- Morgan, J. & Stocken, P., 1998.
"An Analysis of Stock Recommendations,"
204, Princeton, Woodrow Wilson School - Public and International Affairs.
- Kartik, Navin & Ottaviani, Marco & Squintani, Francesco, 2007. "Credulity, lies, and costly talk," Journal of Economic Theory, Elsevier, vol. 134(1), pages 93-116, May.
- Ericson, Richard & Pakes, Ariel, 1995. "Markov-Perfect Industry Dynamics: A Framework for Empirical Work," Review of Economic Studies, Wiley Blackwell, vol. 62(1), pages 53-82, January.
- Hamid Mehran & Rene M. Stulz, 2006.
"The Economics of Conflicts of Interest in Financial Institutions,"
NBER Working Papers
12695, National Bureau of Economic Research, Inc.
- Mehran, Hamid & Stulz, Rene M., 2007. "The economics of conflicts of interest in financial institutions," Journal of Financial Economics, Elsevier, vol. 85(2), pages 267-296, August.
- Mehran, Hamid & Stulz, Rene M., 2006. "The Economics of Conflicts of Interest in Financial Institutions," Working Paper Series 2006-21, Ohio State University, Charles A. Dice Center for Research in Financial Economics.
- Admati, Anat R. & Pfleiderer, Paul, 1986. "A monopolistic market for information," Journal of Economic Theory, Elsevier, vol. 39(2), pages 400-438, August.
- Bolton, Patrick & Freixas, Xavier & Shapiro, Joel, 2007. "Conflicts of interest, information provision, and competition in the financial services industry," Journal of Financial Economics, Elsevier, vol. 85(2), pages 297-330, August.
- Xavier Vives, 2001. "Oligopoly Pricing: Old Ideas and New Tools," MIT Press Books, The MIT Press, edition 1, volume 1, number 026272040x, June.
- Navin Kartik, 2008.
"Strategic Communication with Lying Costs,"
2008 Meeting Papers
350, Society for Economic Dynamics.
- Admati, Anat R & Pfleiderer, Paul, 1988. "Selling and Trading on Information in Financial Markets," American Economic Review, American Economic Association, vol. 78(2), pages 96-103, May.
- Admati, Anat R & Pfleiderer, Paul, 1990. "Direct and Indirect Sale of Information," Econometrica, Econometric Society, vol. 58(4), pages 901-28, July.
- Womack, Kent L, 1996. " Do Brokerage Analysts' Recommendations Have Investment Value?," Journal of Finance, American Finance Association, vol. 51(1), pages 137-67, March.
- Fishman M. J. & Hagerty K. M., 1995. "The Incentive to Sell Financial Market Information," Journal of Financial Intermediation, Elsevier, vol. 4(2), pages 95-115, April.
- Benabou, R. & Laroque, G., 1988.
"Using Privileged Information To Manipulate Markets: Insiders, Gurus And Credibility,"
19, Princeton, Woodrow Wilson School - Discussion Paper.
- Benabou, Roland & Laroque, Guy, 1992. "Using Privileged Information to Manipulate Markets: Insiders, Gurus, and Credibility," The Quarterly Journal of Economics, MIT Press, vol. 107(3), pages 921-58, August.
- Benabou, R. & Laroque, G., 1989. "Using Privileged Information To Manipulate Markets: Insiders, Gurus, And Credibility," Working papers 513, Massachusetts Institute of Technology (MIT), Department of Economics.
- Benabou, R. & Laroque, G., 1992. "Using privileged information to manipulate markets: insiders, gurus, and credibility," Open Access publications from University College London http://discovery.ucl.ac.u, University College London.
- Brad Barber, 2001. "Can Investors Profit from the Prophets? Security Analyst Recommendations and Stock Returns," Journal of Finance, American Finance Association, vol. 56(2), pages 531-563, 04.
- Marco Ottaviani & Peter Norman Sorensen, 2006.
"Reputational Cheap Talk,"
RAND Journal of Economics,
The RAND Corporation, vol. 37(1), pages 155-175, Spring.
- Narasimhan Jegadeesh & Joonghyuk Kim & Susan D. Krische & Charles M. C. Lee, 2004. "Analyzing the Analysts: When Do Recommendations Add Value?," Journal of Finance, American Finance Association, vol. 59(3), pages 1083-1124, 06.
- Allen, Franklin, 1990. "The market for information and the origin of financial intermediation," Journal of Financial Intermediation, Elsevier, vol. 1(1), pages 3-30, March.
- Berry, Steven T, 1992. "Estimation of a Model of Entry in the Airline Industry," Econometrica, Econometric Society, vol. 60(4), pages 889-917, July.
- Aaron S. Edlin, 1997. "Is the Corner Electronics Store Violationg the Antitrust Laws? (or Why the Good Guys Aren't)," Levine's Working Paper Archive 1009, David K. Levine.
- Andrea Galeotti & Sanjeev Goyal, 2007. "The Law of the Few," Economics Discussion Papers 636, University of Essex, Department of Economics.
- Viola Chen, 2008. "Essays in Applied Theory," Levine's Working Paper Archive 122247000000002243, David K. Levine.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Julio Saavedra).
If references are entirely missing, you can add them using this form.