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Costly Portfolio Adjustment

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  • Yosef Bonaparte
  • Russell Cooper

Abstract

This paper studies the dynamic optimization problem of a household when portfolio adjustment is costly. The analysis is motivated by the observation that on a monthly basis, less than 10% of stockholders typically adjust their portfolio of common stocks. We use this, and related observations, to estimate the parameters of household preferences and portfolio adjustment costs. We find significant adjustment costs, beyond the direct costs of buying and selling assets. These adjustment costs imply that inferences drawn about household risk aversion and the elasticity of intertemporal substitution are biased: household risk aversion is lower compared to other estimates and it is not equal to the inverse of the elasticity of intertemporal substitution.

Suggested Citation

  • Yosef Bonaparte & Russell Cooper, 2010. "Costly Portfolio Adjustment," Economics Working Papers ECO2010/19, European University Institute.
    • Handle: RePEc:eui:euiwps:eco2010/19
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    References listed on IDEAS

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    Cited by:

    1. Kim, Hugh H. & Maurer, Raimond & Mitchell, Olivia S., 2013. "Time is money: Life cycle rational inertia and delegation of investment management," CFS Working Paper Series 2013/08, Center for Financial Studies (CFS).
    2. Arna Olafsson & Michaela Pagel, 2017. "The Ostrich in Us: Selective Attention to Financial Accounts, Income, Spending, and Liquidity," NBER Working Papers 23945, National Bureau of Economic Research, Inc.
    3. Christopher J. Gust & J. David López-Salido, 2009. "Portfolio inertia and the equity premium," International Finance Discussion Papers 984, Board of Governors of the Federal Reserve System (U.S.).
    4. Sami Alpanda, 2013. "Identifying The Role Of Risk Shocks In The Business Cycle Using Stock Price Data," Economic Inquiry, Western Economic Association International, vol. 51(1), pages 304-335, January.
    5. Cociuba, Simona E. & Ramanarayanan, Ananth, 2019. "International risk sharing with endogenously segmented asset markets," Journal of International Economics, Elsevier, vol. 117(C), pages 61-78.
    6. Matthias Horn & Andreas Oehler, 2020. "Automated portfolio rebalancing: Automatic erosion of investment performance?," Journal of Asset Management, Palgrave Macmillan, vol. 21(6), pages 489-505, October.
    7. Francisco Gomes & Michael Haliassos & Tarun Ramadorai, 2021. "Household Finance," Journal of Economic Literature, American Economic Association, vol. 59(3), pages 919-1000, September.
    8. Yosef Bonaparte & Frank Fabozzi, 2011. "Household search choice: theory and evidence," Applied Economics, Taylor & Francis Journals, vol. 43(26), pages 3835-3847.
    9. Gianluca Femminis, 2019. "Risk aversion heterogeneity and the investment–uncertainty relationship," Journal of Economics, Springer, vol. 127(3), pages 223-264, August.
    10. Michael Bleaney & Paul Mizen & Veronica Veleanu, 2012. "Bond Spreads as Predictors of Economic Activity in Eight European Economies," Discussion Papers 12/11, University of Nottingham, Centre for Finance, Credit and Macroeconomics (CFCM).
    11. Guiso, Luigi & Sapienza, Paola & Zingales, Luigi, 2018. "Time varying risk aversion," Journal of Financial Economics, Elsevier, vol. 128(3), pages 403-421.
    12. Yosef Bonaparte & Russell Cooper & Mengli Sha, 2019. "Rationalizing Trading Frequency and Returns: Maybe Trading is Good for You," NBER Working Papers 25838, National Bureau of Economic Research, Inc.
    13. Khorunzhina, Natalia, 2013. "Structural estimation of stock market participation costs," Journal of Economic Dynamics and Control, Elsevier, vol. 37(12), pages 2928-2942.
    14. Michael Bleaney & Paul Mizen & Veronica Veleanu, 2016. "Bond Spreads and Economic Activity in Eight European Economies," Economic Journal, Royal Economic Society, vol. 126(598), pages 2257-2291, December.
    15. Fernando Alvarez & Luigi Guiso & Francesco Lippi, 2012. "Durable Consumption and Asset Management with Transaction and Observation Costs," American Economic Review, American Economic Association, vol. 102(5), pages 2272-2300, August.
    16. Gust, Christopher & López-Salido, David, 2014. "Monetary policy and the cyclicality of risk," Journal of Monetary Economics, Elsevier, vol. 62(C), pages 59-75.
    17. Horn, Matthias & Schneider, Julian & Oehler, Andreas, 2024. "Do transactions on social trading platforms predict the stock market behavior of the aggregate private sector?," Finance Research Letters, Elsevier, vol. 66(C).
    18. Yosef Bonaparte & Russell Cooper, 2010. "Rationalizing Trading Frequency and Returns," NBER Working Papers 16022, National Bureau of Economic Research, Inc.
    19. Kim, Hugh Hoikwang & Maurer, Raimond & Mitchell, Olivia S., 2016. "Time is money: Rational life cycle inertia and the delegation of investment management," Journal of Financial Economics, Elsevier, vol. 121(2), pages 427-447.
    20. Kirchner, Markus & Wijnbergen, Sweder van, 2016. "Fiscal deficits, financial fragility, and the effectiveness of government policies," Journal of Monetary Economics, Elsevier, vol. 80(C), pages 51-68.

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    Keywords

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    JEL classification:

    • E21 - Macroeconomics and Monetary Economics - - Consumption, Saving, Production, Employment, and Investment - - - Consumption; Saving; Wealth
    • E44 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Financial Markets and the Macroeconomy
    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions

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