The Open UniversitySkip to content

Non‐linear equity valuation

Ataullah, Ali; Rhys, Huw and Tippett, Mark (2009). Non‐linear equity valuation. Accounting and Business Research, 39(1) pp. 57–73.

DOI (Digital Object Identifier) Link:
Google Scholar: Look up in Google Scholar


We incorporate a real option component into the Ohlson (1995) equity valuation model and then use this augmented model to make assessments about the form and nature of the systematic biases that are likely to arise when empirical work is based on linear models of the relationship between the market value of equity and its determining variables. We also demonstrate how one can expand equity valuation models in terms of an infinite series of ‘orthogonal’ polynomials and thereby determine the relative contribution which the linear and non‐linear components of the relationship between equity value and its determining variables make to overall equity value. This procedure shows that non‐linearities in equity valuation can be large and significant, particularly for firms with low earnings‐to‐book ratios or where the undeflated book value of equity is comparatively small. Moreover, it is highly unlikely the simple linear models that characterise this area of accounting research can form the basis of meaningful statistical tests of the relationship between equity value and its determining variables.

Item Type: Journal Item
ISSN: 0001-4788
Academic Unit/School: Faculty of Business and Law (FBL) > Business > Department for Accounting and Finance
Faculty of Business and Law (FBL) > Business
Faculty of Business and Law (FBL)
Item ID: 50874
Depositing User: Ali Ataullah
Date Deposited: 07 Sep 2017 16:09
Last Modified: 07 Dec 2018 10:56
Share this page:


Altmetrics from Altmetric

Citations from Dimensions

Actions (login may be required)

Policies | Disclaimer

© The Open University   contact the OU