“…Interestingly, the empirical densities of both profit and growth rates are well described by exponential power or Subbotin distributions (see, e.g., Alfarano and Milaković, 2008;Alfarano et al, 2013;Bottazzi and Secchi, 2006;Bottazzi et al, 2001Bottazzi et al, , 2002Stanley et al, 1996, for growth rate distributions), often approximating a special case of the Subbotin distribution known as the Laplace distribution. In our experience, the similarity in the functional form of the cross-sectional distribution of profit and growth rates frequently evokes claims that the two quantities essentially measure the same thing and can be used interchangeably.…”