Big Four

Across the globe, the so-called Big Four accounting and audit firms – Deloitte, PricewaterhouseCoopers, Ernst & Young, and KPMG – are massively influential. Together, they earn more than US$100 billion annually and employ almost one million people. In many profound ways, they have changed how we work, how we manage, how we invest and how we are governed.

Stretching back centuries, their history is ...