as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
generate a list of the 10 most valuable companies worldwide.
user
1. apple
2. microsoft
3. amazon
4. alphabet (google)
5. saudi aramco
6. facebook
7. berkshire hathaway
8. alibaba
9. walmart
10. visa
assistant