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Increasing Returns to Saving and Wealth Inequality

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  • Claudio Campanale

    (Departamento de Fundamentos del Analisis Economico, Universidad de Alicante)

Abstract

In this paper I present an explanation to the fact that in the data wealth is substantially more concentrated than income. Starting from the observation that the composition of households’ portfolios changes towards a larger share of high-yield assets as the level of net worth increases, I ?rst use data on historical asset returns and portfolio composition by wealth level to construct an empirical return function. I then augment an Overlapping Generation version of the standard neoclassical growth model with idiosyncratic labor income risk and missing insurance markets to allow for returns to savings to be increasing in the level of accumulated assets. The quantitative properties of the model are examined and show that an empirically plausible di?erence between the return faced by poor and wealthy agents is able to generate a substantial increase in wealth inequality compared to the basic model, enough to match the Gini index and all but the top 1 percentiles of the U.S. distribution of wealth.

Suggested Citation

  • Claudio Campanale, 2005. "Increasing Returns to Saving and Wealth Inequality," CeRP Working Papers 45, Center for Research on Pensions and Welfare Policies, Turin (Italy).
    • Handle: RePEc:crp:wpaper:45
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    2. Alisdair McKay, 2011. "Household Saving Behavior and Social Security Privatization," Boston University - Department of Economics - Working Papers Series WP2011-027, Boston University - Department of Economics.
    3. Vandermarliere, B. & Ryckebusch, J. & Schoors, K. & Cauwels, P. & Sornette, D., 2017. "Discrete hierarchy of sizes and performances in the exchange-traded fund universe," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 469(C), pages 111-123.
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    6. Sofía Bauducco, 2011. "Seigniorage and Distortionary Taxation in a Model with Heterogeneous Agents and Idiosyncratic Uncertainty," Working Papers Central Bank of Chile 611, Central Bank of Chile.
    7. Njangang, Henri & Asongu, Simplice A. & Tadadjeu, Sosson & Nounamo, Yann & Kamguia, Brice, 2022. "Governance in mitigating the effect of oil wealth on wealth inequality: A cross-country analysis of policy thresholds," Resources Policy, Elsevier, vol. 76(C).
    8. Tran, Anh & Wang, Pingle, 2023. "Barking up the wrong tree: Return-chasing in 401(k) plans," Journal of Financial Economics, Elsevier, vol. 148(1), pages 69-90.
    9. Alisdair McKay, 2013. "Search for Financial Returns and Social Security Privatization," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 16(2), pages 253-270, April.
    10. Oliver Denk & Robert P. Hagemann & Patrick Lenain & Valentin Somma, 2013. "Inequality and Poverty in the United States: Public Policies for Inclusive Growth," OECD Economics Department Working Papers 1052, OECD Publishing.
    11. Henri Njangang & Alim Beleck & Sosson Tadadjeu & Brice Kamguia, 2021. "Do ICTs drive wealth inequality? Evidence from a dynamic panel analysis," Working Papers 21/057, European Xtramile Centre of African Studies (EXCAS).
    12. Maude Pugliese & David Pelletier & Céline Bourdais, 2023. "Separation and Savings in Tax-Favored Retirement Accounts Among Canadian Men and Women," Population Research and Policy Review, Springer;Southern Demographic Association (SDA), vol. 42(4), pages 1-33, August.
    13. Wei, Shang-Jin & Wu, Weixing & Zhang, Linwan, 2019. "Portfolio choices, Asset returns and wealth inequality: evidence from China," Emerging Markets Review, Elsevier, vol. 38(C), pages 423-437.
    14. Joachim Hubmer & Per Krusell & Anthony A. Smith Jr., 2020. "Sources of US Wealth Inequality: Past, Present, and Future," NBER Chapters, in: NBER Macroeconomics Annual 2020, volume 35, pages 391-455, National Bureau of Economic Research, Inc.
    15. Gu, Xinhua & Tam, Pui Sun, 2013. "The saving–growth–inequality triangle in China," Economic Modelling, Elsevier, vol. 33(C), pages 850-857.
    16. Simplice A. Asongu & Beatrice D. Simo-Kengne, 2022. "Demographic Change and Wealth Inequality: Global Evidence," Working Papers of the African Governance and Development Institute. 22/085, African Governance and Development Institute..
    17. Njangang, Henri & Beleck, Alim & Tadadjeu, Sosson & Kamguia, Brice, 2022. "Do ICTs drive wealth inequality? Evidence from a dynamic panel analysis," Telecommunications Policy, Elsevier, vol. 46(2).
    18. Henri Njangang & Alim Beleck & Sosson Tadadjeu & Brice Kamguia, 2021. "Do ICTs drive wealth inequality? Evidence from a dynamic panel analysis," Working Papers of the African Governance and Development Institute. 21/057, African Governance and Development Institute..
    19. James Best & Keshav Dogra, 2023. "Capital Management and Wealth Inequality," Staff Reports 1072, Federal Reserve Bank of New York.

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    More about this item

    Keywords

    Wealth inequality; self-insurance; portfolio composition; increasing returns;
    All these keywords.

    JEL classification:

    • E21 - Macroeconomics and Monetary Economics - - Consumption, Saving, Production, Employment, and Investment - - - Consumption; Saving; Wealth
    • D31 - Microeconomics - - Distribution - - - Personal Income and Wealth Distribution
    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions

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