Which of the following statements are correct? _____________________

1. In a strong-form efficient market, no one is able to earn a positive return.
2. In a weak-form efficient market, all historical information should have been incorporated into stock prices.
3. The disposition effect describes the phenomenon that investors are unwilling to sell assets that have increased in value.
4. Overconfidence can explain the fact that investors tend to trade more frequently than they shoul
5. In an efficient market, some investors can still earn higher returns by taking more risk.
6. Technical analysis does not generate consistent profits in a semi-strong form efficient market.