Fidelity Investments, Bank of America and Goldman Sachs manage wealth for the largest percentage of U.S. millionaires, according to a survey by Fidelity.

Of the 4.1 million U.S. households with at least $1 million of investable assets, 37% have at least one account with Fidelity, according to the third annual Fidelity Millionaire Outlook. The Boston company would not specify the percentage of households that use Bank of America or Goldman Sachs, but it said they are second and third.

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