As its name suggests, PetroChina Company Ltd is the listed arm of state-owned China National Petroleum Corporation (CNPC). It is China's biggest oil producer, and is listed in Hong Kong, New York, and Shanghai.

Templeton buys 39m PetroChina shares

PetroChina shares rebounded yesterday, buoyed by news Templeton Asset Management had raised its holding in the oil giant by 3.7 per cent.

That countered the impact of the recent 0.73 per cent stake cut by Warren Buffet's Berkshire Hathaway.