Even though the market has been enjoying steady gains since late August, there are signs that these gains have not come from traditional demand. We all remember from our Econ 101 textbooks that a price is set when supply intersects demand. Prices set by the stock market are thought to be efficient and reflect an accurate measure of supply and demand. But can we trust a market where most of the volume is concentrated in just a few stocks. Yesterday, 3 stocks (GM, C and F) represented 15% of the
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