"PetroChina became the world's first company worth more than $1 trillion on Monday, surging past Exxon Mobil as the Chinese oil producer's shares nearly tripled in their first day of trading in China. State-owned PetroChina Co., a unit of state-owned China National Petroleum Corp., is the country's biggest oil and gas producer. Its Shanghai initial public offering of 4 billion shares raised $8.94 billion ? a record for a mainland bourse." (AP) via Andrew Sullivan.