In which occasion, can you expect the companys market value to increase?

1) When the company increases the weight (%) of its owners equity in its capital structure by paying out its long-term debt, if all other conditions unchanged. 2) When the companys WACC decreases, if all other conditions remain the same. 3) When the companys risk is perceived higher by the investors & creditors, if all other conditions remain the same. 4) When a company continuously invests heavily into its current operations.