What causes the stock price of a company to go up or down?

Related questions

1. What does EPS TTM mean?
2. What makes stock prices go up?
3. How much of Apple Does Steve Jobs own?
4. How do shareholders get paid?
5. Why did Amazon fail in China?
6. How much did Mark Zuckerberg pay the twins?
7. How much does Lebron make per hour?
8. What percentage does Bill Gates own in Microsoft?
9. Do stocks go up or down after earnings?
10. Why did the Facebook stock drop?

Tags

1. #because
2. #would
3. #share
4. #price
5. #change
6. #demand
7. #prices
8. #supply
9. #moves
10. #conversely
11. #greater
12. #wanted
13. #there
14. #stock
15. #people