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Optimal Resource Allocation in the Brain and the Capital Asset Pricing Model

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  • Hammad, Siddiqi
  • Austin, Murphy

Abstract

Using recent findings from brain sciences, we relax the implicit CAPM assumption of sufficient brain resources, and model human brain as solving two optimization problems instead of one, which are: 1) Optimal resource allocation in the brain. 2) Mean-variance optimization. A security market line with varying slopes (flat, upwards, and downwards) arises depending on the resource allocation decisions in the brain. Size, value, and momentum effects also emerge in this enriched framework. This suggests that the classical CAPM is not misspecified. Rather, what appears as misspecification may be the result of ignoring the optimal resource allocation problem in the brain.

Suggested Citation

  • Hammad, Siddiqi & Austin, Murphy, 2020. "Optimal Resource Allocation in the Brain and the Capital Asset Pricing Model," MPRA Paper 102705, University Library of Munich, Germany.
    • Handle: RePEc:pra:mprapa:102705
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    References listed on IDEAS

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    1. Ricardo Alonso & Isabelle Brocas & Juan D. Carrillo, 2014. "Resource Allocation in the Brain," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 81(2), pages 501-534.
    2. Jostova, Gergana & Philipov, Alexander, 2005. "Bayesian Analysis of Stochastic Betas," Journal of Financial and Quantitative Analysis, Cambridge University Press, vol. 40(4), pages 747-778, December.
    3. Sudipta Basu & Truong Xuan Duong & Stanimir Markov & Eng-Joo Tan, 2013. "How Important are Earnings Announcements as an Information Source?," European Accounting Review, Taylor & Francis Journals, vol. 22(2), pages 221-256, June.
    4. Frazzini, Andrea & Pedersen, Lasse Heje, 2014. "Betting against beta," Journal of Financial Economics, Elsevier, vol. 111(1), pages 1-25.
    5. James Andreoni & Charles Sprenger, 2012. "Risk Preferences Are Not Time Preferences," American Economic Review, American Economic Association, vol. 102(7), pages 3357-3376, December.
    6. Savor, Pavel & Wilson, Mungo, 2014. "Asset pricing: A tale of two days," Journal of Financial Economics, Elsevier, vol. 113(2), pages 171-201.
    7. Jegadeesh, Narasimhan & Titman, Sheridan, 1993. "Returns to Buying Winners and Selling Losers: Implications for Stock Market Efficiency," Journal of Finance, American Finance Association, vol. 48(1), pages 65-91, March.
    8. Stoll, Hans R. & Whaley, Robert E., 1983. "Transaction costs and the small firm effect," Journal of Financial Economics, Elsevier, vol. 12(1), pages 57-79, June.
    9. Randolph B. Cohen & Christopher Polk & Tuomo Vuolteenaho, 2005. "Money Illusion in the Stock Market: The Modigliani-Cohn Hypothesis," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 120(2), pages 639-668.
    10. Paul T E Cusack, 2020. "The Human Brain," Biomedical Journal of Scientific & Technical Research, Biomedical Research Network+, LLC, vol. 31(3), pages 24261-24266, October.
    11. Wu, Liuren, 2018. "Estimating risk-return relations with analysts price targets," Journal of Banking & Finance, Elsevier, vol. 93(C), pages 183-197.
    12. William F. Sharpe, 1964. "Capital Asset Prices: A Theory Of Market Equilibrium Under Conditions Of Risk," Journal of Finance, American Finance Association, vol. 19(3), pages 425-442, September.
    13. Peter Bossaerts, 2009. "What Decision Neuroscience Teaches Us About Financial Decision Making," Annual Review of Financial Economics, Annual Reviews, vol. 1(1), pages 383-404, November.
    14. Kim, Dongcheol, 1997. "A Reexamination of Firm Size, Book-to-Market, and Earnings Price in the Cross-Section of Expected Stock Returns," Journal of Financial and Quantitative Analysis, Cambridge University Press, vol. 32(4), pages 463-489, December.
    15. Eugene F. Fama & Kenneth R. French, 2016. "Dissecting Anomalies with a Five-Factor Model," The Review of Financial Studies, Society for Financial Studies, vol. 29(1), pages 69-103.
    16. Eugene F. Fama & Kenneth R. French, 2004. "The Capital Asset Pricing Model: Theory and Evidence," Journal of Economic Perspectives, American Economic Association, vol. 18(3), pages 25-46, Summer.
    17. Siddiqi, Hammad, 2017. "Certain and uncertain utility: A new perspective on financial innovation," Economics Letters, Elsevier, vol. 158(C), pages 7-9.
    18. Black, Fischer, 1972. "Capital Market Equilibrium with Restricted Borrowing," The Journal of Business, University of Chicago Press, vol. 45(3), pages 444-455, July.
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    More about this item

    Keywords

    CAPM; SML Slope; Resource Allocation; Size; Value; Momentum; High-Alpha-of-Low-Beta;
    All these keywords.

    JEL classification:

    • G10 - Financial Economics - - General Financial Markets - - - General (includes Measurement and Data)
    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates

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