Industry experts expect that if the government goes ahead with its plan to privatize Social Security, only the very largest index fund managers are likely to get a piece of the action, The Wall Street Journal reports.

That means, Barclays, State Street and Vanguard are most likely to see the estimated annual $65 billion in investments come their way. Barclays, in particular, could be chosen, as it manages funds in the government's Thrift Savings Plan, on which the Bush Administration has said it would like to model the private accounts. Investments of $65 billion a year would certainly be considerable, given that stock and bond funds took in $242 billion last year.

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