1. The conference call was good, Rumy gave a good discussion regarding the stock price.
2. Insider purchases
3. Short covering. Most are novices and don't know what they're doing. Short term, they can beat down the share price. Long term, it doesn't really matter - company performs, stock goes up, shorts get burned. In the mean time, though it's psychologically difficult to deal with, look at it as an opportunity to pick up (more) shares cheaply.