Fluctuations of company yearly profits vs. scaled revenue: Fat-tail distribution of Lévy type H. E. Roman, R. A. Siliprandi, Ch. Dose, C. Riccardi and M. Porto EPL, 84 6 (2008) 68003 Published online: 12 January 2009 DOI: 10.1209/0295-5075/84/68003