The top dogs of the recent uptrend capitulated last week as the broad market took a beating. Leading stocks had been stoic over the past few weeks as the major indexes amassed an unusually large number of distribution days. The distribution was worrisome. But the performance of Priceline (PCLN), Apple (AAPL) and other leaders showed little weakness. Still, last week's selling brought down most leaders . The IBD 100 index plunged 8.2% last week —