TradingEdge Weekly for Dec 27 - Heavy selling, a less-healthy environment, rapid recent recoveries: This week, we saw that recent underlying weakness has caused the market environment to become less healthy than most of the past year as selling pressure reaches an extreme. At the same time, financial conditions are getting tighter. But the past few days have seen an impressive showing of buying interest. Some sectors, like healthcare, have been hit hard and are showing signs of a washout.