Why is the stock exchange investment is so volatile (volatile)? Why do stock prices constantly go up and down, but still not all together, but in different directions? It is clear that when there are economic crises, it can not remain on the sidelines and her fever followed by the economy and the financial system. But even in times of relative economic prosperity charts of it prices is not straightforward, as are the teeth and the sine wave rise and fall. Why is that? The fact that the stock exchange - is the essence of economic expectations, fears, hopes and doubts. At it is concentrated the bulk of the buyers and sellers, it is very different for the purposes of professional qualification, the level of optimism and, finally, the psychological stability. The money in the stock market is very mobile, they can easily come to the market and the goes. Being assembled together on it, is a platform for the redistribution of capital, money responsive to investor sentiment. If the absurd ru...