Its probably due to covering of position on news. In this case, shorts are covering.
Makes no sense that there are true buyers. In a bancruptcy, shareholders get shmeissed. Especially in this case, where there will be lawsuit after lawsuit. Sure it shields them for creditors, but thats no reason to buy the stock.
yes it is normal... They are buying on the news. Yes there is some short covering.. but for the most part, they are daytraders trying to make a very impressive return. When was the last time CSCO or MSFT moved that much? Its gambling.. its exciting.. and it doesn't always make a lot of sense.