IDEAS home Printed from https://ideas.repec.org/a/aea/aejmic/v9y2017i4p303-23.html
   My bibliography  Save this article

Welfare Consequences of Information Aggregation and Optimal Market Size

Author

Listed:
  • Kei Kawakami

Abstract

We analyze the welfare implications of information aggregation in a trading model where traders have both idiosyncratic endowment risk and asymmetric information about security payoffs. The optimal market size balances two forces: (i) the risk-sharing role of markets, which creates a positive externality amongst traders, against (ii) the information-aggregation role of prices, which leads to prices that are more correlated with security payoffs, thereby undermining the hedging function of markets. Our analysis indicates that a market with infinitely many traders may not be the right welfare benchmark in the presence of risk aversion and information aggregation.

Suggested Citation

  • Kei Kawakami, 2017. "Welfare Consequences of Information Aggregation and Optimal Market Size," American Economic Journal: Microeconomics, American Economic Association, vol. 9(4), pages 303-323, November.
    • Handle: RePEc:aea:aejmic:v:9:y:2017:i:4:p:303-23
    Note: DOI: 10.1257/mic.20160010
    as

    Download full text from publisher

    File URL: https://www.aeaweb.org/articles?id=10.1257/mic.20160010
    Download Restriction: no
    File URL: https://www.aeaweb.org/articles/attachments?retrieve=Em3KVlV_XhKQRwfkHGujrQUhYaQIH4O1
    Download Restriction: no
    File URL: https://www.aeaweb.org/articles/attachments?retrieve=_B-gBVpt7k5Ko_LBiJ1iod4CT-BoIDQP
    Download Restriction: Access to full text is restricted to AEA members and institutional subscribers.
    ---><---

    Other versions of this item:

    References listed on IDEAS

    as
    1. Cantillon, Estelle & Yin, Pai-Ling, 2011. "Competition between exchanges: A research agenda," International Journal of Industrial Organization, Elsevier, vol. 29(3), pages 329-336, May.
    2. Thierry Foucault & Christine A. Parlour, 2004. "Competition for Listings," RAND Journal of Economics, The RAND Corporation, vol. 35(2), pages 329-355, Summer.
    3. Biais, Bruno & Glosten, Larry & Spatt, Chester, 2005. "Market microstructure: A survey of microfoundations, empirical results, and policy implications," Journal of Financial Markets, Elsevier, vol. 8(2), pages 217-264, May.
    4. Marco Pagano, 1989. "Trading Volume and Asset Liquidity," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 104(2), pages 255-274.
    5. Madhavan, Ananth, 2000. "Market microstructure: A survey," Journal of Financial Markets, Elsevier, vol. 3(3), pages 205-258, August.
    6. Pipat Pithyachariyakul, 1986. "Exchange Markets: A Welfare Comparison of Market Maker and Walrasian Systems," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 101(1), pages 69-84.
    7. Economides, Nicholas & Siow, Aloysius, 1988. "The Division of Markets is Limited by the Extent of Liquidity (Spatial Competition with Externalities)," American Economic Review, American Economic Association, vol. 78(1), pages 108-121, March.
    8. José M. Marín & Rohit Rahi, 2000. "Information Revelation and Market Incompleteness," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 67(3), pages 563-579.
    9. Thierry Foucault & Albert J. Menkveld, 2008. "Competition for Order Flow and Smart Order Routing Systems," Journal of Finance, American Finance Association, vol. 63(1), pages 119-158, February.
    10. Madhavan, Ananth, 1992. "Trading Mechanisms in Securities Markets," Journal of Finance, American Finance Association, vol. 47(2), pages 607-641, June.
    11. Rostek, Marzena & Weretka, Marek, 2015. "Information and strategic behavior," Journal of Economic Theory, Elsevier, vol. 158(PB), pages 536-557.
    12. William O. Brown & J. Harold Mulherin & Marc D. Weidenmier, 2008. "Competing with the New York Stock Exchange," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 123(4), pages 1679-1719.
    13. Diamond, Douglas W. & Verrecchia, Robert E., 1981. "Information aggregation in a noisy rational expectations economy," Journal of Financial Economics, Elsevier, vol. 9(3), pages 221-235, September.
    14. Hirshleifer, Jack, 1971. "The Private and Social Value of Information and the Reward to Inventive Activity," American Economic Review, American Economic Association, vol. 61(4), pages 561-574, September.
    15. Albert S. Kyle, 1989. "Informed Speculation with Imperfect Competition," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 56(3), pages 317-355.
    16. Edward E. Schlee, 2001. "The Value of Information in Efficient Risk-Sharing Arrangements," American Economic Review, American Economic Association, vol. 91(3), pages 509-524, June.
    17. Spiegel, Matthew & Subrahmanyam, Avanidhar, 1992. "Informed Speculation and Hedging in a Noncompetitive Securities Market," The Review of Financial Studies, Society for Financial Studies, vol. 5(2), pages 307-329.
    18. David M. Kreps & Jose A. Scheinkman, 1983. "Quantity Precommitment and Bertrand Competition Yield Cournot Outcomes," Bell Journal of Economics, The RAND Corporation, vol. 14(2), pages 326-337, Autumn.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Babus, Ana & Parlatore, Cecilia, 2022. "Strategic fragmented markets," Journal of Financial Economics, Elsevier, vol. 145(3), pages 876-908.
    2. Colin von Negenborn, 2023. "The more the merrier? On the optimality of market size restrictions," Review of Economic Design, Springer;Society for Economic Design, vol. 27(3), pages 603-634, September.
    3. Marzena Rostek & Ji Hee Yoon, 2021. "Exchange Design and Efficiency," Econometrica, Econometric Society, vol. 89(6), pages 2887-2928, November.
    4. Arnold, Lutz G. & Zelzner, Sebastian, 2022. "Financial trading versus entrepreneurship: Competition for talent and negative feedback effects," The Quarterly Review of Economics and Finance, Elsevier, vol. 86(C), pages 186-199.
    5. Lou, Youcheng & Rahi, Rohit, 2021. "Information, market power and welfare," LSE Research Online Documents on Economics 118843, London School of Economics and Political Science, LSE Library.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Kei Kawakami, 2014. "Information Aggregation and Optimal Market Size," Department of Economics - Working Papers Series 1182, The University of Melbourne.
    2. Kei Kawakami, 2013. "Optimal Market Size," Department of Economics - Working Papers Series 1168, The University of Melbourne.
    3. Cantillon, Estelle & Yin, Pai-Ling, 2011. "Competition between exchanges: A research agenda," International Journal of Industrial Organization, Elsevier, vol. 29(3), pages 329-336, May.
    4. Vayanos, Dimitri & Wang, Jiang, 2013. "Market Liquidity—Theory and Empirical Evidence ," Handbook of the Economics of Finance, in: G.M. Constantinides & M. Harris & R. M. Stulz (ed.), Handbook of the Economics of Finance, volume 2, chapter 0, pages 1289-1361, Elsevier.
    5. G. Wuyts, 2007. "Stock Market Liquidity.Determinants and Implications," Review of Business and Economic Literature, KU Leuven, Faculty of Economics and Business (FEB), Review of Business and Economic Literature, vol. 0(2), pages 279-316.
    6. Pierre-Cyrille Hautcoeur & Amir Rezaee & Angelo Riva, 2023. "Competition between securities markets: stock exchange industry regulation in the Paris financial center at the turn of the twentieth century," Cliometrica, Springer;Cliometric Society (Association Francaise de Cliométrie), vol. 17(2), pages 261-299, May.
    7. Biais, Bruno & Glosten, Larry & Spatt, Chester, 2005. "Market microstructure: A survey of microfoundations, empirical results, and policy implications," Journal of Financial Markets, Elsevier, vol. 8(2), pages 217-264, May.
    8. Ledenyov, Dimitri O. & Ledenyov, Viktor O., 2015. "Wave function method to forecast foreign currencies exchange rates at ultra high frequency electronic trading in foreign currencies exchange markets," MPRA Paper 67470, University Library of Munich, Germany.
    9. Glebkin, Sergei & Kuong, John Chi-Fong, 2023. "When large traders create noise," Journal of Financial Economics, Elsevier, vol. 150(2).
    10. Alan D. Morrison, 2004. "Competition and Information Production in Market Maker Models," Journal of Business Finance & Accounting, Wiley Blackwell, vol. 31(7‐8), pages 1171-1190, September.
    11. Jérémy Ducros & Angelo Riva, 2014. "The Lyon Stock Exchange: A Struggle for Survival (1866-1914)," PSE Working Papers halshs-00960528, HAL.
    12. Dimitri Vayanos & Jiang Wang, 2009. "Liquidity and Asset Prices: A Unified Framework," NBER Working Papers 15215, National Bureau of Economic Research, Inc.
    13. Eric Budish & Robin S. Lee & John J. Shim, 2024. "A Theory of Stock Exchange Competition and Innovation: Will the Market Fix the Market?," Journal of Political Economy, University of Chicago Press, vol. 132(4), pages 1209-1246.
    14. Elyès Jouini & Clotilde Napp, 2008. "Are More Risk-Averse Agents More Optimistic? Insights from a Simple Rational Expectations Equilibrium Model," Post-Print halshs-00176630, HAL.
    15. Alan D. Morrison, 2004. "Competition and Information Production in Market Maker Models," Journal of Business Finance & Accounting, Wiley Blackwell, vol. 31(7-8), pages 1171-1190.
    16. Juan Hatchondo, 2004. "The value of information with heterogeneous agents and partially revealing prices," Econometric Society 2004 North American Summer Meetings 175, Econometric Society.
    17. Jérémy Ducros & Angelo Riva, 2018. "The Lyon Stock Exchange: The Survival of the Fittest (1866-1914)," PSE Working Papers halshs-01800720, HAL.
    18. Luis Angel Medran & Xavier Vives, 2004. "Regulating Insider Trading When Investment Matters," Review of Finance, European Finance Association, vol. 8(2), pages 199-277.
    19. Rochet, Jean-Charles. & Vila, Jean-Luc., 1991. "Insider trading and market manipulations--existence and uniqueness of equilibrium," Working papers 3318-91., Massachusetts Institute of Technology (MIT), Sloan School of Management.
    20. Degryse, H.A., 2007. "Competition on financial markets : Does market design matter?," Other publications TiSEM ee5530b2-34f7-4d95-ad62-f, Tilburg University, School of Economics and Management.

    More about this item

    JEL classification:

    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection
    • D62 - Microeconomics - - Welfare Economics - - - Externalities
    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
    • D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search; Learning; Information and Knowledge; Communication; Belief; Unawareness

    Statistics

    Access and download statistics

    Corrections

    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:aea:aejmic:v:9:y:2017:i:4:p:303-23. 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.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc 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 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: Michael P. Albert (email available below). General contact details of provider: https://edirc.repec.org/data/aeaaaea.html .

    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.