Valuation of a biotech company: A real options approach

Resumen

The aim of this paper consists of valuating a real biotechnology firm that is based on a portfolio of several drug development projects at different phases. They are patent-protected R&D projects and their values are obtained by implementing an extension of the real options approach in Schwartz (2004). To be precise, the life cycle of the drug is modeled by considering an alternative and more realistic behavior for the evolution of the FCF, different from the standard Geometric Brownian motion, once the peak sales is reached till the patent expiration, we will also allow for the possibility of the generic entrance once the patent expires. Different expected costs to completion are considered here, that is one equation to each compound; a different probability of catastrophic event depending on the phase and so on. It is shown that the abandonment value is higher for those compounds being in preclinical testing than those in clinical trials.