Factbox: Top 25 global companies by market value

VANCOUVER (Reuters.com) -- An analysis of the world's 25 largest companies by market value provides some telling insights into the tectonic shifts shaping global markets. The United States continues to dominate the ranks of the world's biggest companies, but to a much lesser degree than it did even a decade ago. It now accounts for nine of the Top 25, followed closely by Europe with eight.

Here are the Top 10 companies by market value: 1. Petro China, China, $524 billion 2. Exxon Mobil, USA, $460 billion 3. General Electric, USA, $339 billion 4. Gazprom, Russia, $310 billion 5. China Mobile, China, $290 billion 6. Microsoft, USA, $266 billion 7. Ind. & Comm. Bank, China, $264 billion 8. Petrobas, Brazil, $231 billion 9. Royal Dutch Shell, Netherlands, $221 billion 10. AT&T, USA, $214 billion