Slow holiday trading and fears that European leaders lack a unified response to the continent's debt crisis sent stocks tumbling the past few sessions to their worst week in two months. It's also the Dow's worst Thanksgiving week since traders began observing the holiday in 1942. Wall Street had early gains Friday, but a shortened holiday trading session and worries over a relatively unproductive European Union conference pared those advances. The Dow finished the week down 4.8 percent.
