Elliott Management Corp., a hedge fund run by activist investor Paul Singer, has made an offer to acquire network equipment maker Riverbed Technology Inc. for $3.08 billion. Riverbed was reportedly working with Goldman Sachs Group Inc. in November on a potential sale.

California, US-based API management platform Apigee raised $20.5 million in a stock transaction as part of the acquisition of predictive analytics firm InsightsOne, according to a SEC disclosure.

Private equity firm Symphony Technology Group or STG and its portfolio firm Evidera said they had purchased healthcare modeling company Archimedes for an undisclosed amount.

Oil and gas firms ONGC Videsh Ltd and Oil India Ltd have completed the joint purchase of Videocon Group's 10% holding in a gas field in Mozambique in a deal valued at $2.475 billion.

Cebu Air Inc., operating as Cebu Pacific Air, will acquire Tigerair Philippines from Singapore's Tiger Airways Holdings Ltd. for an undisclosed sum. Cebu Air and Tiger Airways also entered into strategic alliance to operate common routes between Singapore and the Philippines.

As the Chinese government plans to consolidate production, Anhui Conch Cement Co said it plans to increase its capacity to 30 million metric tons through acquisitions, Bloomberg reported.

Eastern Media International Corp., which currently owns a 30% stake in Eastern Broadcasting Co., is reportedly placing a bid to acquire Carlyle Group's entire 61% stake in Taiwan's largest broadcasting company.

Sandvik, a high-technology engineering firm based in Sweden, has agreed to buy Texas-based Varel International Energy Services for a price tag of about $740 million.

Bangalore, India-based startup Little Eye Labs confirmed that it has been bought by social media giant Facebook for an amount between the range $10 million and $15 million.

Oracle said it had agreed to purchase Corente, a New Jersey-based cloud-services firm, pushing the technology giant further into the Internet age, The New York Times The Dealbook reported.