Tiger Global is looking to raise $1.25 billion for its sixth private equity fund and use some of the money to raise its stake in Facebook, Bloomberg reports. The New York-based firm has received commitments for $1 billion and is planning to line up an additional $250 million by next month.

Tiger Global raised over $2.5 billion for its previous private equity partnerships, buying stakes in companies, including Facebook and LinkedIn. Its fifth fund invested $164 million to build a 1% stake in Facebook from December 2009 to June 2010.

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