Enterprises financing is a core issue in all economies as the access to any financing source asks for the preliminary study of financial performances. Information provided by analyzing financial performances is at the basis of decisions taken by investors, shareholders, banks and crediting institutions, insurance societies and even contracting authorities that grant non-reimbursable funds. The enterprises studied in this monograph are acting in the building sector, for which we tried to achieve an aggregate index of financial performance. Modelling the financial performance offers...