David Blake discusses evidence that pension funds display strong herding behavior, and tend to herd in subgroups defined by fund size and sponsor type. David Blake is Professor of Pension Economics at Cass Business School, City University, Director of the Pensions Institute and Chairman of Square Mile Consultants, a training and research consultancy. He is also: Co-Founder with JPMorgan and Towers Watson of the LifeMetrics Indices; Senior Research Associate, Financial Markets Group, London School of Economics; Senior Consultant, UBS Pensions Research Centre, London School of Economics; and Research Associate, Centre for Risk & Insurance Studies, University of Nottingham Business School. Publication