Now that BlackRock Inc. has become the elephant in the room, the New York-based money manager plans to spend 2010 expanding internationally, developing its exchange-traded fund and defined contribution businesses.

Following the completion of its $13.5 billion acquisition of Barclays Global Investors, which closed in December, BlackRock more than doubled its assets under management to $3.3 trillion from $1.3 trillion a year earlier and became the industry’s largest money manager by assets as it leapfrogged Bank of America Corp. in the process.

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