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CAPM‐based capital budgeting and nonadditivity

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  • Carlo Alberto Magni

Abstract

Purpose - In investment decision making, the net present value (NPV) rule is often used alongside the well‐known capital asset pricing model (CAPM). In particular, the use of disequilibrium NPV is endorsed in corporate finance for both valuation and decision. The purpose of this paper is to test the reliability of this approach to capital budgeting valuations and decisions. Design/methodology/approach - The use of disequilibrium values for computing a project's NPV is considered, and the consistency with the CAPM is checked. The resulting valuation and decision are contrasted with the no‐arbitrage principle, which is universally considered a benchmark for rationality. Findings - The paper finds that the disequilibrium NPV is logically deducted from the CAPM for decision‐making purposes. However, this NPV provides nonadditive values, which makes it inconsistent with the no‐arbitrage principle. Practical implications - The use of the CAPM+NPV procedure for valuing projects is invalid if disequilibrium values are used. Its use for decision making is logically valid but practically unsafe, because decision makers may frame equivalent courses of action in different ways, resulting in different decisions, which implies that they may incur arbitrage losses. Originality/value - The literature does not distinguish between equilibrium and disequilibrium NPV nor between valuation and decision. This paper explicitly makes this distinction and the resulting consequences are highlighted.

Suggested Citation

  • Carlo Alberto Magni, 2008. "CAPM‐based capital budgeting and nonadditivity," Journal of Property Investment & Finance, Emerald Group Publishing Limited, vol. 26(5), pages 388-398, August.
    • Handle: RePEc:eme:jpifpp:v:26:y:2008:i:5:p:388-398
    DOI: 10.1108/14635780810900251
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    References listed on IDEAS

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    1. Stapleton, Richard C, 1971. "Portfolio Analysis, Stock Valuation and Capital Budgeting Decision Rules for Risky Projects," Journal of Finance, American Finance Association, vol. 26(1), pages 95-117, March.
    2. Hamada, Robert S, 1969. "Portfolio Analysis, Market Equilibrium and Corporation Finance," Journal of Finance, American Finance Association, vol. 24(1), pages 13-31, March.
    3. Rubinstein, Mark E, 1973. "A Mean-Variance Synthesis of Corporate Financial Theory," Journal of Finance, American Finance Association, vol. 28(1), pages 167-181, March.
    4. Bierman, Harold, Jr & Hass, Jerome E, 1973. "Capital Budgeting Under Uncertainty: A Reformulation," Journal of Finance, American Finance Association, vol. 28(1), pages 119-129, March.
    5. Donald L. Tuttle & Robert H. Litzenberger, 1968. "Leverage, Diversification And Capital Market Effects On A Risk‐Adjusted Capital Budgeting Framework," Journal of Finance, American Finance Association, vol. 23(3), pages 427-443, June.
    6. Mossin, Jan, 1969. "Security Pricing and Investment Criteria in Competitive Markets," American Economic Review, American Economic Association, vol. 59(5), pages 749-756, December.
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    Cited by:

    1. Tor Brunzell & Eva Liljeblom & Mika Vaihekoski, 2013. "Determinants of capital budgeting methods and hurdle rates in Nordic firms," Accounting and Finance, Accounting and Finance Association of Australia and New Zealand, vol. 53(1), pages 85-110, March.
    2. Magni, Carlo Alberto, 2009. "Correct or incorrect application of CAPM? Correct or incorrect decisions with CAPM?," European Journal of Operational Research, Elsevier, vol. 192(2), pages 549-560, January.

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    More about this item

    Keywords

    Investments; Net present value; Economic disequilibrium; Capital asset pricing model; Project evaluation; Decision making;
    All these keywords.

    JEL classification:

    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions
    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates
    • G31 - Financial Economics - - Corporate Finance and Governance - - - Capital Budgeting; Fixed Investment and Inventory Studies
    • M21 - Business Administration and Business Economics; Marketing; Accounting; Personnel Economics - - Business Economics - - - Business Economics

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