Common Risk Factors of Infrastructure Investments

44 Pages Posted: 3 Apr 2013 Last revised: 19 Apr 2015

Semir Ben Ammar

University of St. Gallen; University of St. Gallen - School of Finance

Martin Eling

University of St. Gallen - Institute of Insurance Economics; University of Saint Gallen - School of Finance (SoF)

Date Written: December 26, 2014

Abstract

The risk of infrastructure investments is driven by unique factors that cannot be well described by standard asset class factor models. We thus create a nine-factor model based on infrastructure-specific risk exposure, i.e., market risk, size, value, momentum, cashflow volatility, leverage, investment growth, term risk, and default risk. We empirically test our model on a large dataset of U.S. infrastructure stocks in different subsectors (utility, telecommunication, and transportation) and over a long period of time (1983 to 2011). The new factor model is able to capture the variation of infrastructure returns better than the Fama/French three-factor, the Carhart four-factor or the extended Fung/Hsieh eight-factor models. Thus, our model helps to improve the evaluation of infrastructure funds and to better determine the cost of capital of infrastructure firms, something that is increasingly relevant in light of the growing need for privately financed infrastructure projects.

Keywords: Infrastructure, Asset class, Factor model, Fama/French factors, Leverage, Cash flow volatility, Investment factor

JEL Classification: G11, G12, G19, L90, O18

Suggested Citation

Ben Ammar, Semir and Eling, Martin, Common Risk Factors of Infrastructure Investments (December 26, 2014). Energy Economics, Vol. 49, 2015. Available at SSRN: https://ssrn.com/abstract=2242383 or http://dx.doi.org/10.2139/ssrn.2242383

Semir Ben Ammar (Contact Author)

University of St. Gallen ( email )

Dufourstrasse 50
St Gallen
Switzerland

University of St. Gallen - School of Finance ( email )

Unterer Graben 21
St.Gallen, CH-9000
Switzerland

Martin Eling

University of St. Gallen - Institute of Insurance Economics ( email )

Kirchlistrasse 2
St. Gallen, 9010
Switzerland

University of Saint Gallen - School of Finance (SoF) ( email )

Unterer Graben 21
St.Gallen, CH-9000
Switzerland

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