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Journal of Accounting Research Vol. 43 No. 1 2005

Employee Stock Options, Equity Valuation, and the Valuation of Option Grants Using a Warrant‐Pricing Model

FENG LI1; M. H. Franco Wong2

1 University of Michigan–Ann Arbor · 2 University of Chicago

open access

Abstract

We investigate the use of a warrant‐pricing approach to incorporate employee stock options (ESOs) into equity valuation and to account for the dilutive effect of ESOs in the valuation of option grants for financial reporting purposes. Our valuation approach accounts for the jointly determined nature of ESO and shareholder values. The empirical results show that our stock price estimate exhibits lower prediction errors and higher explanatory powers for actual share price than does the traditional stock price estimate. We use our valuation approach to assess the implications of dilution on the fair‐value estimates of ESO grants. We find that the fair value is overstated by 6% if we ignore the dilutive feature of ESOs. Furthermore, this bias is larger for firms that are heavy users of ESOs, small, and R&D intensive, and for firms that have a broad‐based ESO compensation plan.

DOI
10.1111/j.1475-679x.2005.00164.x
Volume
43
Issue
1
Pages
97-131
Language
en
Sources
openalex bibtex:phds-export.bib crossref

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