This Deloitte report provides a comprehensive look at both the global efforts made to increase board diversity, and the progress made to date. The research scans 6 continents, over 72 countries, and over 7,000 companies. Findings are divided by region and country, and include industry variations.
Women on Boards: Global Trends in Gender Diversity on Corporate Boards
Research conducted for this report state that companies with women in strong leadership positions generate a return on equity of 10.1% per year vs. 7.4% without. The MSCI uses this business case to make the argument that quotas are necessary to reach the goal of 30% female representation in a timely manner.