America's Biggest Money Managers

   Assets under management at the II 300, Institutional Investor's annual ranking of America's 300 biggest money managers, surged 16.9 percent last year, to $31.1 trillion. Last year's growth rate was nearly double that of the 2005 rate.

   San Francisco-based Barclays Global Investors, with $1.81 trillion, tops the II 300 for a third year in a row. Boston’s State Street Global Advisors returns in second place, with $1.74 trillion under management. State Street gained more money - $307.2 billion – than any other firm in the ranking except New York-based BlackRock, which zooms from 16th to fifth place thanks in part to its acquisition of Merrill Lynch Investment Managers last September.

   This year's top five firms by total assets are listed below. To access the full II 300, click on the Total Assets button to the right. To regroup the firms by their holdings in a particular asset class – total equities, domestic equities, and so on – click on the appropriate button from the menu to the right.

   The Index is a listing of firm names in alphabetical order; click on the firm name to find how well it fared in this year's II 300.