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The Effects of Diversification on Banks´ Expected Returns

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  • Dairo Estrada

    ()

  • Angela González Arbeláez

    ()

  • Javier Gutierréz Rueda

    ()

Abstract

In financial theory, the optimal allocation of assets and its relationship withprofitability has been one of the main concerns; the question has always been ifbanks should focus or diversify their assets. In our case, we would like to answerthis question focusing in diversification of the loan portfolio, presenting a theoreticalmodel that considers the possible gains from diversification, while taking intoaccount the effects of monitoring. Additionally, we present empirical evidence onthis matter for the Colombian banking system. According to the model, we findthat once the banks have chosen its optimal level of monitoring, expected return isalways higher when the bank decides to focus. Additionally, the empirical resultssuggest that there are no possible gains form diversification in bank´s cost and that,on average, the effects of focusing the loan portfolio reduces bank´s return whileshowing positive effects of focusing on an specific sector.

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Bibliographic Info

Paper provided by BANCO DE LA REPÚBLICA in its series BORRADORES DE ECONOMIA with number 004991.

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Length: 31
Date of creation: 14 Aug 2008
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Handle: RePEc:col:000094:004991

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Keywords: Diversification; Risk; Colombian Banking System.;

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  1. Dairo Estrada & Poldy Osorio, 2004. "Effects Of Financial Capital On Colombian Banking Efficiency," ENSAYOS SOBRE POLÍTICA ECONÓMICA, BANCO DE LA REPÚBLICA - ESPE.
  2. Allen N. Berger & Robert De Young, 2001. "The effects of geographic expansion on bank efficiency," Finance and Economics Discussion Series 2001-03, Board of Governors of the Federal Reserve System (U.S.).
  3. V. Cerasi & S. Daltung, 1995. "The Optimal Size of a Bank: Costs and Benefits of Diversification," Departmental Working Papers 1995-05, Department of Economics, Management and Quantitative Methods at Università degli Studi di Milano.
  4. Ferrier, Gary D. & Lovell, C. A. Knox, 1990. "Measuring cost efficiency in banking : Econometric and linear programming evidence," Journal of Econometrics, Elsevier, vol. 46(1-2), pages 229-245.
  5. Dairo Estrada & Poldy Osorio, . "Effects of Financial Capital on Colombian Banking Efficiency," Borradores de Economia 291, Banco de la Republica de Colombia.
  6. Winton, Andrew, 1997. "Competition among Financial Intermediaries When Diversification Matters," Journal of Financial Intermediation, Elsevier, vol. 6(4), pages 307-346, October.
  7. von Westernhagen, Natalja & Porath, Daniel & Hayden, Evelyn, 2006. "Does diversification improve the performance of German banks? Evidence from individual bank loan portfolios," Discussion Paper Series 2: Banking and Financial Studies 2006,05, Deutsche Bundesbank, Research Centre.
  8. Cerasi, Vittoria & Daltung, Sonja, 2004. "Multiple-bank lending: Diversification and free-riding in monitoring," CFS Working Paper Series 2004/18, Center for Financial Studies (CFS).
  9. Iftekhar Hasan & Anthony Saunders & Viral V. Acharya, 2002. "Should banks be diversified? Evidence from individual bank loan portfolios," BIS Working Papers 118, Bank for International Settlements.
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  11. Dairo Estrada & Poldy Osorio, 2004. "Effects Of Financial Capital On Colombian Banking Efficiency," BORRADORES DE ECONOMIA 002432, BANCO DE LA REPÚBLICA.
  12. Edward I. Altman, 1968. "Financial Ratios, Discriminant Analysis And The Prediction Of Corporate Bankruptcy," Journal of Finance, American Finance Association, vol. 23(4), pages 589-609, 09.
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  14. Denis, David J & Denis, Diane K & Sarin, Atulya, 1997. " Agency Problems, Equity Ownership, and Corporate Diversification," Journal of Finance, American Finance Association, vol. 52(1), pages 135-60, March.
  15. Degryse, Hans & Ongena, Steven, 2007. "The impact of competition on bank orientation," Journal of Financial Intermediation, Elsevier, vol. 16(3), pages 399-424, July.
  16. Hancock, Diana, 1986. "A model of the financial firm with imperfect asset and deposit elasticities," Journal of Banking & Finance, Elsevier, vol. 10(1), pages 37-54, March.
  17. Berger, Allen N. & Hancock, Diana & Humphrey, David B., 1993. "Bank efficiency derived from the profit function," Journal of Banking & Finance, Elsevier, vol. 17(2-3), pages 317-347, April.
  18. Holmstrom, Bengt & Tirole, Jean, 1993. "Market Liquidity and Performance Monitoring," Journal of Political Economy, University of Chicago Press, vol. 101(4), pages 678-709, August.
  19. Clark, Jeffrey A, 1996. "Economic Cost, Scale Efficiency, and Competitive Viability in Banking," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 28(3), pages 342-64, August.
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Cited by:
  1. David Pérez-Reyna, . "Una aproximación para analizar la estabilidad financiera por medio de un DSGE," Temas de Estabilidad Financiera 040, Banco de la Republica de Colombia.

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