R&D Investment timing, default and capital structure

Daniela Bragoli, Giovanni Marseguerra, Flavia Cortelezzi, Pierpaolo Giannoccolo

Risultato della ricerca: Contributo in rivistaArticolo in rivista


This paper investigates the interaction between R&D investment timing, probability of default, and capital structure. In particular we are interested in studying the investment behaviour of three different types of firms according to their capital structure: firms that only use internal funds as a source of funding (unlevered), firms that use debt and that are able to attract unlimited amount of funds (levered unconstrained) and finally firms that use debt, but are not able to attract all the amount needed (levered constrained). We consider irreversible investments in R&D with uncertain returns, financed through debt. We show that debt financing (with or without constraints) significantly alters the standard results in the real option literature. First, we show that leverage distorts the investment threshold and shareholders of a levered firm tend to accelerate investment with respect to an all equity financed firm. This finding is explained by the fact that the increase in the probability of default, which is positively correlated with leverage, might induce a potential loss of the investment option and thus reduce the value of the option to wait providing equity holders with an incentive to speed up the investment. Second, if we introduce the financial constraint, the investment threshold is characterized by a U-shaped relation. The latter implies that the investment threshold diminishes as the financial constraint becomes less stringent, but up to a certain minimum value. After a certain amount of leverage the firm attitude towards R&D investment changes. The firm becomes more risk adverse, given the much higher probability of default (linked to a much higher leverage in its balance sheet).
Lingua originaleEnglish
pagine (da-a)779-801
Numero di pagine23
RivistaReview of Quantitative Finance and Accounting
Stato di pubblicazionePubblicato - 2020


  • capital budgeting
  • debt financing constraint
  • real options

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