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Big 4 Auditing firms

25 Jul 2009 on learning

The big 4 companies control the accountancy industry in a oligopoly:

  1. PricewaterhouseCoopers ($28.2bn)
  2. Deloitte Touche Tohmatsu ($27.4bn)
  3. Ernst & Young ($24.5bn)
  4. KPMG ($22.7b)