Dell has agreed to buy information technology services company Perot Systems for $3.9 billion, it has been announced. Round Rock, Texas-based Dell has offered $30 a share in cash for Perot, around 31 times its earnings in 2009. Plano, Texas-based Perot, which manages computer systems, data centers, software and websites for its clients, achieved sales of $2.78 billion last year.  The deal reflects DellÔÇÖs desire to move beyond the personal computer business and expand into services and more specifically, the healthcare industry.

The worldÔÇÖs third largest mining company, Rio Tinto, has sold its Alcan Composites unit to SwitzerlandÔÇÖs Schweiter Technologies, it announced today.

The private equity arm of investment banking firm Goldman Sachs is to invest $250 million in ChinaÔÇÖs Geely Automotive.  Hong Kong-listed Geely, ChinaÔÇÖs largest privately owned carmaker, is reportedly planning to spend the money on trebling production at its flagship facility in the centrally-located province of Hunan, from 50,000 to 150,000 units per annum.  Goldman Sachs Capital PartnersÔÇÖ investment will equate to around 15 per cent of Geely, which is headquartered in Hangzhou and valued at around $1.6 billion.

The news agency Thomson Reuters has agreed to buy Oslo-based Hugin Group from its US-based owner NYSE Euronext.

UK engineering and construction company Balfour Beatty has agreed to buy New York-based transportation engineering group Parsons Brinckerhoff for $626 million.

UK engineering and construction company Balfour Beatty has agreed to buy New York, US-based transport engineering group Parsons Brinckerhoff for $626 million (£383 million).

Sweden has sweetened its bid to sell 36 fighter jets to Brazil by saying that 40 per cent of the aircraft would be built in Brazil.

AustraliaÔÇÖs second largest airline, Virgin Blue, is reportedly in talks with Chicago-based aircraft manufacturer Boeing for a fleet upgrade that could be worth $3.5 billion.

UK engineering and construction company Balfour Beatty is preparing a rights issue to fund what it calls a ÔÇ£significantÔÇØ acquisition.

UK-based Tullow oil and Texas-based Anadarko Petroleum are due to reveal the discovery of a new oil frontier stretching along the African coast from Ghana to Sierra Leone.