The valuation of firms is one of the topics that valuation theorists and practitioners have addressed since the early stages of economic sciences. Firm valuations are regularly conducted using discounted cash flow (DCF) models in which expected future cash flows are discounted at...

The financial valuation of a drug that is still under development is required for various purposes. The risk-adjusted net present value (r-NPV) method, which recently emerged in the biotech industry, uses the development attrition rate as a discount factor to reflect risk during each development...