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Measuring multi-product banks' market power using the Lerner index

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  • Sherrill Shaffer
  • Laura Spierdijk

Abstract

The aggregate Lerner index is a popular composite measure of multi-product banks’ market power, based on the assumption that banks’ single aggregate output factor is total assets. This study identifies three limitations of the aggregate Lerner index that potentially distort its interpretation as a composite measure of market power. We investigate the empirical relevance of these limitations for a sample of U.S. banks covering the years 2011–2017. We establish an economically relevant bias in the value of the aggregate Lerner index and show that this bias may also affect regressions that use the Lerner index as a dependent or explanatory variable.

Suggested Citation

  • Sherrill Shaffer & Laura Spierdijk, 2019. "Measuring multi-product banks' market power using the Lerner index," CAMA Working Papers 2019-17, Centre for Applied Macroeconomic Analysis, Crawford School of Public Policy, The Australian National University.
    • Handle: RePEc:een:camaaa:2019-17
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    as
    1. Encaoua, David & Jacquemin, Alexis & Moreaux, Michel, 1986. "Global Market Power and Diversification," Economic Journal, Royal Economic Society, vol. 96(382), pages 525-533, June.
    2. Lepetit, Laetitia & Nys, Emmanuelle & Rous, Philippe & Tarazi, Amine, 2008. "The expansion of services in European banking: Implications for loan pricing and interest margins," Journal of Banking & Finance, Elsevier, vol. 32(11), pages 2325-2335, November.
    3. Beck, Thorsten & De Jonghe, Olivier & Schepens, Glenn, 2013. "Bank competition and stability: Cross-country heterogeneity," Journal of Financial Intermediation, Elsevier, vol. 22(2), pages 218-244.
    4. Hughes, Joseph P. & Mester, Loretta J., 2013. "Who said large banks don’t experience scale economies? Evidence from a risk-return-driven cost function," Journal of Financial Intermediation, Elsevier, vol. 22(4), pages 559-585.
    5. A. Colin Cameron & Jonah B. Gelbach & Douglas L. Miller, 2008. "Bootstrap-Based Improvements for Inference with Clustered Errors," The Review of Economics and Statistics, MIT Press, vol. 90(3), pages 414-427, August.
    6. Barbosa, Klenio & de Paula Rocha, Bruno & Salazar, Fernando, 2015. "Assessing competition in the banking industry: A multi-product approach," Journal of Banking & Finance, Elsevier, vol. 50(C), pages 340-362.
    7. Leroy, Aurélien & Lucotte, Yannick, 2017. "Is there a competition-stability trade-off in European banking?," Journal of International Financial Markets, Institutions and Money, Elsevier, vol. 46(C), pages 199-215.
    8. Weill, Laurent, 2013. "Bank competition in the EU: How has it evolved?," Journal of International Financial Markets, Institutions and Money, Elsevier, vol. 26(C), pages 100-112.
    9. Christensen, Laurits R & Jorgenson, Dale W & Lau, Lawrence J, 1973. "Transcendental Logarithmic Production Frontiers," The Review of Economics and Statistics, MIT Press, vol. 55(1), pages 28-45, February.
    10. Jens Forssbæck & Choudhry Tanveer Shehzad, 2015. "The Conditional Effects of Market Power on Bank Risk—Cross-Country Evidence," Review of Finance, European Finance Association, vol. 19(5), pages 1997-2038.
    11. David G. McMillan & Fiona J. McMillan, 2016. "US Bank Market Structure: Evolving Nature and Implications," Journal of Financial Services Research, Springer;Western Finance Association, vol. 50(2), pages 187-210, October.
    12. Christa Hainz & Laurent Weill & Christophe Godlewski, 2013. "Bank Competition and Collateral: Theory and Evidence," Journal of Financial Services Research, Springer;Western Finance Association, vol. 44(2), pages 131-148, October.
    13. Claudia M. Buch & Cathérine T. Koch & Michael Koetter, 2013. "Do Banks Benefit from Internationalization? Revisiting the Market Power--Risk Nexus," Review of Finance, European Finance Association, vol. 17(4), pages 1401-1435.
    14. Abhiman Das & Subal C. Kumbhakar, 2016. "Markup and efficiency of Indian banks: an input distance function approach," Empirical Economics, Springer, vol. 51(4), pages 1689-1719, December.
    15. Timothy Gunning & Robin Sickles, 2011. "A multi-product cost function for physician private practices," Journal of Productivity Analysis, Springer, vol. 35(2), pages 119-128, April.
    16. Manthos D. Delis & Sotirios Kokas & Steven Ongena, 2016. "Foreign Ownership and Market Power in Banking: Evidence from a World Sample," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 48(2-3), pages 449-483, March.
    17. Shaffer, Sherrill, 1983. "Non-structural measures of competition : Toward a synthesis of alternatives," Economics Letters, Elsevier, vol. 12(3-4), pages 349-353.
    18. Marcus Miller & Lei Zhang & Hanhao Li, 2013. "When bigger isn't better: bailouts and bank reform," Oxford Economic Papers, Oxford University Press, vol. 65(suppl_1), pages 7-41, April.
    19. Holden, Craig W & Subrahmanyam, Avanidhar, 1992. " Long-Lived Private Information and Imperfect Competition," Journal of Finance, American Finance Association, vol. 47(1), pages 247-270, March.
    20. repec:eee:ejores:v:270:y:2018:i:2:p:747-760 is not listed on IDEAS
    21. Kim, Moshe, 1986. "Banking technology and the existence of a consistent output aggregate," Journal of Monetary Economics, Elsevier, vol. 18(2), pages 181-195, September.
    22. repec:eee:quaeco:v:65:y:2017:i:c:p:212-226 is not listed on IDEAS
    23. Anginer, Deniz & Demirguc-Kunt, Asli & Zhu, Min, 2014. "How does competition affect bank systemic risk?," Journal of Financial Intermediation, Elsevier, vol. 23(1), pages 1-26.
    24. Calderon, Cesar & Schaeck, Klaus, 2016. "The Effects of Government Interventions in the Financial Sector on Banking Competition and the Evolution of Zombie Banks," Journal of Financial and Quantitative Analysis, Cambridge University Press, vol. 51(4), pages 1391-1436, August.
    25. Cubillas, Elena & Fernández, Ana I. & González, Francisco, 2017. "How credible is a too-big-to-fail policy? International evidence from market discipline," Journal of Financial Intermediation, Elsevier, vol. 29(C), pages 46-67.
    26. Caballe, Jordi & Krishnan, Murugappa, 1994. "Imperfect Competition in a Multi-security Market with Risk Neutrality," Econometrica, Econometric Society, vol. 62(3), pages 695-704, May.
    27. repec:eee:finsta:v:33:y:2017:i:c:p:81-95 is not listed on IDEAS
    28. Hans Degryse, 2004. "The Impact of Technology and Regulation on the Geographical Scope of Banking," Oxford Review of Economic Policy, Oxford University Press, vol. 20(4), pages 571-590, Winter.
    29. John H. Boyd & Mark Gertler, 1994. "Are banks dead? Or are the reports greatly exaggerated?," Quarterly Review, Federal Reserve Bank of Minneapolis, issue Sum, pages 2-23.
    30. Robert DeYoung & Tara Rice, 2004. "Noninterest Income and Financial Performance at U.S. Commercial Banks," The Financial Review, Eastern Finance Association, vol. 39(1), pages 101-127, February.
    31. Thomas Kick & Esteban Prieto, 2015. "Bank Risk and Competition: Evidence from Regional Banking Markets," Review of Finance, European Finance Association, vol. 19(3), pages 1185-1222.
    32. Jiménez, Gabriel & Lopez, Jose A. & Saurina, Jesús, 2013. "How does competition affect bank risk-taking?," Journal of Financial Stability, Elsevier, vol. 9(2), pages 185-195.
    33. Kenneth G. Elzinga & David E. Mills, 2011. "The Lerner Index of Monopoly Power: Origins and Uses," American Economic Review, American Economic Association, vol. 101(3), pages 558-564, May.
    34. Albert S. Kyle, 1989. "Informed Speculation with Imperfect Competition," Review of Economic Studies, Oxford University Press, vol. 56(3), pages 317-355.
    35. Horst Gischer & Holger Müller & Toni Richter, 2015. "How to measure the market power of banks in the lending business accurately: a segment-based adjustment of the Lerner Index," Applied Economics, Taylor & Francis Journals, vol. 47(42), pages 4475-4483, September.
    36. David C. Wheelock & Paul W. Wilson, 2012. "Do Large Banks Have Lower Costs? New Estimates of Returns to Scale for U.S. Banks," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 44(1), pages 171-199, February.
    37. Hendrik Hakenes & Iftekhar Hasan & PhilIP Molyneux & Ru Xie, 2015. "Small Banks and Local Economic Development," Review of Finance, European Finance Association, vol. 19(2), pages 653-683.
    38. Mitchell A. Petersen & Raghuram G. Rajan, 2002. "Does Distance Still Matter? The Information Revolution in Small Business Lending," Journal of Finance, American Finance Association, vol. 57(6), pages 2533-2570, December.
    39. David C. Wheelock & Paul W. Wilson, 2018. "The evolution of scale economies in US banking," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 33(1), pages 16-28, January.
    40. Michael Koetter & James W. Kolari & Laura Spierdijk, 2012. "Enjoying the Quiet Life under Deregulation? Evidence from Adjusted Lerner Indices for U.S. Banks," The Review of Economics and Statistics, MIT Press, vol. 94(2), pages 462-480, May.
    41. Bolt, Wilko & Humphrey, David, 2015. "Assessing bank competition for consumer loans," Journal of Banking & Finance, Elsevier, vol. 61(C), pages 127-141.
    42. Shaffer, Sherrill, 1984. "Scale Economies in Multiproduct Firms," Bulletin of Economic Research, Wiley Blackwell, vol. 36(1), pages 51-58, May.
    43. Inklaar, Robert & Koetter, Michael & Noth, Felix, 2015. "Bank market power, factor reallocation, and aggregate growth," Journal of Financial Stability, Elsevier, vol. 19(C), pages 31-44.
    44. repec:eee:jbfina:v:82:y:2017:i:c:p:203-216 is not listed on IDEAS
    45. Sherill Shaffer, 1996. "Viability of Traditional Banking Activities: Evidence from Shifts in Conduct and Excess Capacity," International Journal of the Economics of Business, Taylor & Francis Journals, vol. 3(2), pages 125-143.
    46. Mirzaei, Ali & Moore, Tomoe, 2014. "What are the driving forces of bank competition across different income groups of countries?," Journal of International Financial Markets, Institutions and Money, Elsevier, vol. 32(C), pages 38-71.
    47. Lindenberg, Eric B & Ross, Stephen A, 1981. "Tobin's q Ratio and Industrial Organization," The Journal of Business, University of Chicago Press, vol. 54(1), pages 1-32, January.
    48. Ahamed, M. Mostak & Mallick, Sushanta, 2017. "Does regulatory forbearance matter for bank stability? Evidence from creditors’ perspective," Journal of Financial Stability, Elsevier, vol. 28(C), pages 163-180.
    49. Mester, Loretta J., 1996. "A study of bank efficiency taking into account risk-preferences," Journal of Banking & Finance, Elsevier, vol. 20(6), pages 1025-1045, July.
    50. repec:oup:rfinst:v:20:y:2007:i:2:p:391-426. is not listed on IDEAS
    51. repec:eee:jbfina:v:90:y:2018:i:c:p:1-16 is not listed on IDEAS
    52. Martín-Oliver, Alfredo & Ruano, Sonia & Salas-Fumás, Vicente, 2013. "Why high productivity growth of banks preceded the financial crisis," Journal of Financial Intermediation, Elsevier, vol. 22(4), pages 688-712.
    53. Thomsen, Thomas, 2000. "Short cuts to dynamic factor demand modelling," Journal of Econometrics, Elsevier, vol. 97(1), pages 1-23, July.
    54. Dong, Yizhe & Firth, Michael & Hou, Wenxuan & Yang, Weiwei, 2016. "Evaluating the performance of Chinese commercial banks: A comparative analysis of different types of banks," European Journal of Operational Research, Elsevier, vol. 252(1), pages 280-295.
    55. Benston, George J & Hanweck, Gerald A & Humphrey, David B, 1982. "Scale Economies in Banking: A Restructuring and Reassessment," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 14(4), pages 435-456, November.
    56. Fu, Xiaoqing (Maggie) & Lin, Yongjia (Rebecca) & Molyneux, Philip, 2014. "Bank competition and financial stability in Asia Pacific," Journal of Banking & Finance, Elsevier, vol. 38(C), pages 64-77.
    57. Martin Ruckes, 2004. "Bank Competition and Credit Standards," Review of Financial Studies, Society for Financial Studies, vol. 17(4), pages 1073-1102.
    58. Suominen, Matti, 1994. " Measuring Competition in Banking: A Two-Product Model," Scandinavian Journal of Economics, Wiley Blackwell, vol. 96(1), pages 95-110.
    59. Paolo Coccorese, 2014. "Estimating the Lerner index for the banking industry: a stochastic frontier approach," Applied Financial Economics, Taylor & Francis Journals, vol. 24(2), pages 73-88, January.
    60. Fuss, Melvyn A, 1977. "The Structure of Technology over Time: A Model for Testing the "Putty-Clay" Hypothesis," Econometrica, Econometric Society, vol. 45(8), pages 1797-1821, November.
    61. Tsionas, Efthymios G. & Malikov, Emir & Kumbhakar, Subal C., 2018. "An internally consistent approach to the estimation of market power and cost efficiency with an application to U.S. banking," European Journal of Operational Research, Elsevier, vol. 270(2), pages 747-760.
    62. Fonseca, Ana Rosa & González, Francisco, 2010. "How bank capital buffers vary across countries: The influence of cost of deposits, market power and bank regulation," Journal of Banking & Finance, Elsevier, vol. 34(4), pages 892-902, April.
    63. McAllister, Patrick H. & McManus, Douglas, 1993. "Resolving the scale efficiency puzzle in banking," Journal of Banking & Finance, Elsevier, vol. 17(2-3), pages 389-405, April.
    64. Ho, Katherine & Ishii, Joy, 2011. "Location and competition in retail banking," International Journal of Industrial Organization, Elsevier, vol. 29(5), pages 537-546, September.
    65. Diewert, W E, 1971. "An Application of the Shephard Duality Theorem: A Generalized Leontief Production Function," Journal of Political Economy, University of Chicago Press, vol. 79(3), pages 481-507, May-June.
    66. Kerry Back & C. Henry Cao & Gregory A. Willard, 2000. "Imperfect Competition among Informed Traders," Journal of Finance, American Finance Association, vol. 55(5), pages 2117-2155, October.
    67. Hall, Robert E, 1973. "The Specification of Technology with Several Kinds of Output," Journal of Political Economy, University of Chicago Press, vol. 81(4), pages 878-892, July-Aug..
    68. Gelfand, Matthew D. & Spiller, Pablo T., 1987. "Entry barriers and multiproduct oligopolies: Do they forebear or spoil?," International Journal of Industrial Organization, Elsevier, vol. 5(1), pages 101-113, March.
    69. Santiago Carbó‐Valverde & Francisco Rodríguez‐Fernández & Gregory F. Udell, 2016. "Trade Credit, the Financial Crisis, and SME Access to Finance," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 48(1), pages 113-143, February.
    70. Diego Restrepo‐Tobón & Subal C. Kumbhakar, 2014. "Enjoying The Quiet Life Under Deregulation? Not Quite," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 29(2), pages 333-343, March.
    71. MacDonald, Glenn M & Slivinski, Alan, 1987. "The Simple Analytics of Competitive Equilibrium with Multiproduct Firms," American Economic Review, American Economic Association, vol. 77(5), pages 941-953, December.
    72. A. P. Lerner, 1934. "The Concept of Monopoly and the Measurement of Monopoly Power," Review of Economic Studies, Oxford University Press, vol. 1(3), pages 157-175.
    73. repec:taf:apeclt:v:24:y:2017:i:15:p:1075-1079 is not listed on IDEAS
    74. Nicola Giocoli, 2012. "Who Invented the Lerner Index? Luigi Amoroso, the Dominant Firm Model, and the Measurement of Market Power," Review of Industrial Organization, Springer;The Industrial Organization Society, vol. 41(3), pages 181-191, November.
    75. Oliver, Alfredo Martin & Fumas, Vicente Salas & Saurina, Jesus, 2006. "Risk premium and market power in credit markets," Economics Letters, Elsevier, vol. 93(3), pages 450-456, December.
    76. Mark S. Grinblatt & Stephen A. Ross, 1985. "Market Power in a Securities Market with Endogenous Information," The Quarterly Journal of Economics, Oxford University Press, vol. 100(4), pages 1143-1167.
    77. Sealey, Calvin W, Jr & Lindley, James T, 1977. "Inputs, Outputs, and a Theory of Production and Cost at Depository Financial Institutions," Journal of Finance, American Finance Association, vol. 32(4), pages 1251-1266, September.
    78. Clark, Jeffrey A & Siems, Thomas F, 2002. "X-Efficiency in Banking: Looking beyond the Balance Sheet," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 34(4), pages 987-1013, November.
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    Keywords

    multi-product banks; market power; Lerner index; consistent aggregation;

    JEL classification:

    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection
    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets
    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages

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