DoubleClick is in ‘active talks’ with Microsoft and other potential suitors over a sale, according to the Wall Street Journal.

The digital marketing group has reportedly appointed investment bank Morgan Stanley to review its options, including a sale or stock market listing.

It was bought by private equity group Hellman & Friedman in 2005 for around $1.1bn, but its investors apparently want at least $2bn for the firm.

DoubleClick – which also purchased rich media ad firm Tangozebra earlier this month – is yet to comment.