Wall St. opens Christmas week with strong gains

Wall Street slumped on Thursday and Friday as weak crude prices dampened the optimism sparked by the first Federal Reserve interest rate hike in nearly a decade. Oil prices have been sliding under continued pressure from global oversupply and tepid demand. "It's going to be interesting to see if this market can hold up and divorce itself, at least for today, from the price of oil," said Peter Cardillo, chief market economist at First Standard Financial in New York.