1989: Big 8 become Big 6
Ernst & Whinney + Arthur Young = Ernst and Young
Deloitte Haskins & Sells + Touche Ross = Deloitte
KMG (Klynveld Main Goerdeler)* + Peat Marwick Mitchell** + Armitage & Norton* = KPMG
1998: Big 6 become Big 5
Price Waterhouse + Coopers & Lybrand = PricewaterhouseCoopers (PwC)
2002: Big 5 become Big 4
Arthur Andersen insolvency (consultant part is now Accenture)
* = Not In Big 8
** = Actually 1987
Source: [2130]
BDO Seidman
Crowe Horwath
Grant Thornton
McGladrey & Pullen