PetroChina became the first company to reach a $1 trillion market capitalization in 2007.
PetroChina briefly reached a valuation above $1 trillion when its shares began trading in Shanghai in November 2007. The listing generated extraordinary enthusiasm, but the company’s market value later declined substantially as the initial excitement faded and broader market conditions weakened.
PetroChina is the listed arm of China National Petroleum Corporation, one of China’s major state-owned energy groups. Its business covers oil and gas exploration, production, refining, chemicals, and fuel distribution.
The episode demonstrates why a market-cap record can be short-lived. A company can cross a threshold because of a sharp opening rally, while later prices reflect different expectations about profits, regulation, commodities, and the wider economy. PetroChina’s 2007 milestone is often overlooked because Apple and other technology companies later made the trillion-dollar level more familiar.