A nice summary of the P+L argument for diversity at the top of companies. This article quotes data suggesting that diverse boards are 43% more profitable than those that are not, while diverse executive teams are 21% more likely to outperform.

The article is written from an investor perspective and goes on to talk about firms such as BlackRock, Vanguard and State Street who - as shareholders - are pressuring companies to focus on this area and gives examples of where this pressure has led to change.