An empirical investigation of the effects of concentration on profitability among US banks

Fiona, Tregenna (2006): An empirical investigation of the effects of concentration on profitability among US banks.

Abstract

This paper analyses the effects of concentration on profitability in the US banking sector from 1994-2005, using bank-level panel data. A new index of concentration is proposed, which reflects the depth and intensity of concentration. The econometric specification facilitates the simultaneous testing of the four main hypotheses in the literature concerning the relationship between concentration and profitability. Strong support is found for the Structure-Conduct-Performance hypothesis, as well as some support for the Relative Market Power hypothesis. The results are robust to alternative econometric techniques and specifications, and to various measures of profitability and of concentration. Further analysis sheds light on the nature and possible channels of the concentration-profitability relationship. A positive relationship is found between concentration and profitability even when the largest banks are excluded from the sample, suggesting that the relationship between concentration and profitability may act in a generalised structural way. In addition to very large banks, large banks and small banks also appear to benefit from concentration, but with no clear advantages to lower-middle-sized banks. Analysis of the effects of concentration on the components of profitability suggests that concentration may raise both interest and non-interest revenue, and reduce both interest and non-interest costs. Furthermore, concentration appears to depress bank deposit interest rates and raise both lending rates and the interest rate spread. This suggests that bank concentration might have negative effects on savings, investment, and growth.

• Item Type: MPRA Paper
• Language: English
• Keywords: banks; financial institutions; profitability; concentration; competition; market structure
• Subjects: L - Industrial Organization > L1 - Market Structure, Firm Strategy, and Market Performance > L11 - Production, Pricing, and Market Structure ; Size Distribution of Firms; L - Industrial Organization > L1 - Market Structure, Firm Strategy, and Market Performance > L10 - General; O - Economic Development, Innovation, Technological Change, and Growth > O1 - Economic Development > O16 - Financial Markets ; Saving and Capital Investment ; Corporate Finance and Governance; G - Financial Economics > G3 - Corporate Finance and Governance > G34 - Mergers ; Acquisitions ; Restructuring ; Corporate Governance; D - Microeconomics > D4 - Market Structure, Pricing, and Design > D40 - General; G - Financial Economics > G2 - Financial Institutions and Services > G21 - Banks ; Depository Institutions ; Micro Finance Institutions ; Mortgages

References

Bain, J.S. (1951) ‘Relation of profit rate to industrial concentration: American manufacturing, 1936-1940’, Quarterly Journal of Economics, 65: 293-324.

Baum, C.F., Schaffer, M.E., and Stillman, S. 2003. ‘Instrumental variables and GMM: estimation and testing’, The Stata Journal, 3(1): 1-31.

Beck, T., Demirguc-Kunt, A., and Levine, R. (2003) ‘Bank concentration and crises’ NBER Working Papers No. 9921.

Berger, A.N. (1995) ‘The profit-structure relationship in banking - tests of market-power and efficient-structure hypotheses’ Journal of Money, Credit and Banking, 27(2): 404-31.

Berger, A.N. et al (2004) ‘Bank concentration and competition: an evolution in the making’ Journal of Money, Credit and Banking, 36(3): 433-51.

Bikker, J.A. and Groenewald, J.M. (2000) ‘Competition and concentration in the EU banking industry’ Kredit und Kapital, 33: 62-98.

Bikker, J.A. and Haaf, K. (2002) ‘Competition, concentration and their relationship: an empirical analysis of the banking industry,’ Journal of Banking and Finance, 26(11): 2191-2214.

Bond, S. (2002) ‘Dynamic panel data models: a guide to micro data methods and practice’ Cemmap working paper, 09/02.

Brewer, E. III and Jackson, W.E. III (2004) ‘The “risk-adjusted” price-concentration relationship in banking’ Federal Reserve Bank of Atlanta Working Papers, 2004-35.

Caminal, R. and Matutes, C. (2002) ‘Can competition in the credit market be excessive?’ UFAE and IAE Working Papers, 527.02.

Carlson, M. and Perli, R. (2003) ‘Profits and balance sheet developments at US commercial banks in 2002’ Federal Reserve Bulletin, June: 243-70.

Cetorelli, N. (2004) ‘Real effects of bank competition’ Journal of Money, Credit and Banking, 36(3): 543-558.

Coccorese, P. (1998) ‘Assessing the competitive conditions in the Italian banking system: some empirical evidence’ BNL Quarterly Review, 205: 171-191.

Corvoisier, S. and Gropp, R. (2001) ‘Bank concentration and retail interest rates’ European Central Bank Working Paper Series, Working Paper 72.

De Bandt, O. and Davis, E. (2000) ‘Competition, contestability and market structure in European banking sectors on the eve of EMU’ Journal of Banking and Finance, 24: 1045-66.

Demirguc-Kunt, A. and Huizinga, H. (2000) ‘Financial structure and bank profitability’ World Bank Policy Research Working Papers, 2430.

Demsetz, H. (1968) ‘Do competition and monopolistic competition differ?’ Journal of Political Economy, 76(1): 146-148.

Demsetz, H. (1973) ‘Industry structure, market rivalry, and public policy’ Journal of Law and Economics, 16(1):1-10.

English, W.B. and Reid, B.K. (1995) ‘Profits and balance sheet developments at US commercial banks in 1994’ Federal Reserve Bulletin, 81(6): 545-569.

Federal Deposit Insurance Corporation (1997) History of the Eighties — Lessons for the Future Washington DC: FDIC.

Freixas, X. and Rochet, J. (1997) Microeconomics of Banking Cambridge: MIT Press.

Garmaise, M.J. and Moskowitz, T.J. (2004) ‘Bank mergers and crime: the real and social effects of credit market competition’ NBER Working Papers, No. 11006.

Gilbert, R. A. (1984) ‘Bank market structure and competition: a survey’ Journal of Money, Credit and Banking, 16(4): 617-645.

Gischer, H. and Stiele, M. (2004) ‘Testing for banking competition in Germany: evidence from savings banks’ Money Macro and Finance (MMF) Research Group Conference 2004 35, Money Macro and Finance Research Group.

Guzman, Mark G. (2000) ‘Bank structure, capital accumulation and growth: a simple macroeconomic model’ Economic Theory, 16: 421-455.

Huizinga, H. (2000) ‘Financial structure and bank profitability’ World Bank Policy Research Working Papers, No. 2430.

Im, K.S., Pesaran, M.H., and Shin, Y. (2003) ‘Testing for unit roots in heterogeneous panels’ Journal of Econometrics, 115(1): 53-74.

Jeon, Y. and Miller, S.M. (2002) ‘Bank concentration and performance’ University of Connecticut Department of Economics Working Papers, No. 2002-25.

Jones, K.D. and Critchfield, T. (2005) ‘Consolidation in the U.S. banking industry: is the “long, strange trip” about to end?’ FDIC Banking Review, 17(4): 31-61.

Maddala, G.S. and Wu, S. (1999) 'A comparative study of unit root tests with panel data and a new simple test', Oxford Bulletin of Economics and Statistics, 61(0): 631-652.

Molyneux, P. and Seth, R. (1996) ‘Foreign banks, profits and commercial credit extension in the United States’ Federal Reserve Bank of New York Research Papers, 9628.

Nichols, M. and Hendrickson, J. (1997) ‘Profit differentials between Canadian and US commercial banks: the role of regulation’ Journal of Economic History, 57(3): 674-96.

Nier, Erlend (2000) ‘The Profitability of banks: A cross-country study with a particular focus on UK banks’ mimeo.

Northcott, Carol Ann (2004) ‘Competition in banking: a review of the literature’ Bank of Canada Working Papers, No. 2004-24.

Panzar, J.C. and Rosse, J.N. (1987) ‘Testing for “monopoly” equilibrium’ The Journal of Industrial Economics, 35(4): 443-456.

Pilloff, S.J. (2004) ‘Bank merger activity in the United States, 1994-2003’ Board of Governors of the Federal Reserve System Staff Study No.176.

Rhoades, S.A. (2000) ‘Bank mergers and banking structure in the United States, 1980-1998’ Board of Governors of the Federal Reserve System Staff Study No.174.

Samolyk, K. (2004) ‘The future of banking in America’ FDIC Banking Review, 16(2).

Schmalensee, R. (1985) ‘Do markets differ much?’ American Economic Review, 75(3): 341-51.

Schmalensee, R. (1987) ‘Collusion versus differential efficiency: testing alternative hypotheses’ Journal of Industrial Economics, 35(4): 399-425.

Shaffer, S. (2002) ‘Competitive bank pricing and adverse selection, with implications for testing the SCP hypothesis’ Quarterly Review of Economics and Finance, 42: 633-647.

Smirlock, M. (1985) ‘Evidence on the (non) relationship between concentration and profitability’ Journal of Money, Credit and Banking, 17(1): 69-83.

Williams, B. (1998) ‘A pooled study of the profits and size of foreign banks in Australia’ Journal of Multinational Financial Management, 8: 211-231.

Wooldridge, J.M. 2002. Econometric Analysis of Cross Section and Panel Data Cambridge: MIT Press.