
Nasdaq OMX Group Inc could launch a rival bid for NYSE Euronext to avoid being left on the sidelines, a source said, as traditional exchanges race to merge to see off upstart electronic rivals.

Giant Anglo-Australian miner BHP Billiton has agreed to buy shale gas assets from US firm Chesapeake Energy for 4.75 billion US dollars. The purchase of Chesapeake's stake in a field in Fayetteville, Arkansas represents a move into the rapidly expanding shale gas business for BHP.

The Shanghai Stock Exchange and Brazil's BM&F Bovespa signed this week an agreement that could lead to closer ties between the two. Bovespa said it was looking for cross-listing across both exchanges, although this would not happen immediately.

India’s manufacturer of International Tractors (Sonalika brand) is in advanced negotiations with Argentina-based company Apache for the establishment of a 25 million US dollars assembly plant in the South American country as part of a regional campaign.

Switzerland’s largest insurer, Zurich Financial Services, has agreed to pay as much as 2.1 billion US dollars for 51% of Banco Santander’s insurance business in Brazil, Mexico, Chile, Argentina and Uruguay.

Repsol-YPF plans to start deepwater exploration off the coast of Tierra del Fuego in the Malvinas basin are expected to begin before the end of the first half of 2011, according to company’s sources.

Argentina's Pan American Energy will sign a deal later this month to buy Exxon Mobil local downstream unit Esso, turning the company into a fully integrated oil and gas producer. Pan American Energy is a unit of Bridas Corp., which is jointly owned by Argentina's Bulgheroni family through Bridas Energy Holdings and China's Cnooc Ltd.

Brazil would receive a significant technology transfer if it buys US-made fighter jets, a US Defence Department official said, seeking to ease concerns before Brazil selects a winning bidder.

Gold climbed above 1,400 US dollars an ounce to the highest price in almost seven weeks in London as unrest in the Middle East and North Africa spreads. Silver reached a 30-year high and palladium advanced.

Rockhopper Exploration plc (AIM: RKH), the North Falkland Basin oil and gas exploration company, announces that the 14/10-4 appraisal well was spudded at 0040hrs GMT on 19 February 2011.