Comcast Corp. said in a regulatory filing that its NBCUniversal unit has exercised its option to sell “a substantial portion” of it A&E Television Networks stake to join venture partners. According to the WSJ, the sale could be worth approximately $2 billion. www.comcast.com

DigitalGlobe (NYSE: CGI) has rejected a $792 million takeover bid from GeoEye Inc. (Nasdaq: GEOY), saying the $17 per share offer was too low. www.digitalglobe.com

HgCapital has hired Jefferies to help it sell British drug company Mercury Pharma, according to the FT. HgCapital bought the company just six months ago for £178 million. www.mercurypharma.com

3i Group is in talks to sell Enterprise, a UK-based provider of infrastructure maintenance services for the public and utility sectors, to Spain’s Ferrovial, according to the FT. www.3i.com

Ixia Inc. (Nasdaq: XXIA) has agreed to acquire Anue Systems Inc., an Austin, Texas–based developer of network visibility solutions. The deal is valued at $145 million in cash, and expected to close later this quarter. www.anuesystems.com

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