Client Sector Distribution as of 12/31/2011

Representative List of Clients*
California Public Employees' Retirement System
Chicago Public School Teachers' Retirement System
New York State Common Retirement Fund
Los Angeles City Employees' Retirement System
Teachers' Retirement System of the City of New York
Commonwealth of Pennsylvania Public School Employees' Retirement System
Exelon Corporation
Houston Municipal Employees Pension System
State Universities Retirement System of Illinois
Illinois Municipal Retirement Fund