Firm Value and the mis-use of the CAPM for valuation and decision making

Magni, Carlo Alberto (2005): Firm Value and the mis-use of the CAPM for valuation and decision making. Unpublished.

Abstract

This paper shows that a decision maker using the CAPM for valuing firms and making decisions may contradict Modigliani and Miller’s Proposition I, if he adopts the widely-accepted disequilibrium NPV. As a consequence, CAPM-minded agents employing this NPV are open to arbitrage losses and miss arbitrage opportunities. As a result, even though the use of the disequilibrium NPV for decision-making is deductively drawn from the CAPM, its use for both valuation and decision should be rejected.

• Item Type: MPRA Paper
• Language: English
• Keywords: Firm value, Free Cash Flow, CAPM, Modigliani and Miller’s Proposition I, Net Present Value, disequilibrium, arbitrage, decision making
• Subjects: G - Financial Economics > G1 - General Financial Markets > G11 - Portfolio Choice; Investment Decisions; G - Financial Economics > G1 - General Financial Markets > G12 - Asset Pricing; Trading volume; Bond Interest Rates; G - Financial Economics > G3 - Corporate Finance and Governance > G31 - Capital Budgeting; Fixed Investment and Inventory Studies; M - Business Administration and Business Economics; Marketing; Accounting > M2 - Business Economics > M21 - Business Economics

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