If earnings exceed analysts' expectations, the stocks can shoot up. If the numbers underperform, the stock can tank. Then again, occasionally, stocks don't move the way you would have expected.
Anyway, many traders use earnings plays for trading strategies. Also, option traders look for high implied volatility of stocks for for option selling strategies.
Here are many of the stocks reporting earnings this week:
If you like interesting stock lists like this, check out many of the free stock lists at WallStreetNewsNetwork.com.