The mistaken notion that the internal rate of return (IRR) and net present value (NPV) contain reinvestment rate assumptions lingers in teaching materials and corporate practice. The fact is that there are no reinvestment rate assumptions built into, or implicit to, the computation and use of...

This paper shows that the notion of rate of return is best understood through the lens of the average-internal-rate-of-return (AIRR) model, first introduced in Magni (2010a). It is an NPV-consistent approach based on a coherent definition of rate of return and on the notion of Chisini mean, it...

In investment appraisal, uncertainty can be managed through intervals or fuzzy numbers because the arithmetical properties and the extension principle are well established and can be successfully applied in a rigorous way. We apply interval and fuzzy numbers to the Average Internal Rate of...

Evaluating an industrial opportunity often means to engage in financial modelling which results in estimation of a large amount of economic and accounting data, which are then gathered in an economically rational framework: the pro forma financial statements. While the standard net present value...

In Jiang's (2017, JAI, 9 (4): 77–91), the author proposes an interesting metric, which is a special case of Average Internal Rate of Return (AIRR), introduced in Magni (2010). In the paper, the author also deals with Economic AIRR (EAIRR) (Magni 2013) and ICM-based AROI (Magni 2011, Altshuler...