The dynamic structure of profit rates for 156 US manufacturing companies is analysed by means of fractional integration techniques as an alternative to the commonly used ARIMA models with respect to the 'persistence of profits'. Thereby the pseudo-spectral density aproach of Velasco and Robinson...

One of the main shortcomings of the profit persistence literature is the fact that it looks only at surviving companies. This paper uses a unique dataset to analyse profit persistence in two different samples of stationary series: 85 surviving US companies from 1950-1999 and 72 exiters. While...

Much empirical literature dealing with the competitive environment hypothesis tends to find nonstationary behaviour and very high persistence in time series of company profits. Profit time series is modelled using a simple threshold autoregressive model that allows for nonstationary behaviour...