The share market, by definition, is a place where the collective shares or shares of different companies are traded. In the share market the other forms of securities and derivatives are also sold. Yet another variation of the share market is the bond market.

Variations of the Share Market
The various kinds of share market are as follows:

* 1-Bond Market
* 2-Commodities Market
* 3-Markets for Derivatives

The bond markets are a conventional form of the share markets. They are primarily informal over the counter markets where the bonds are sold. Commodities are sold in the commodity market. The derivatives do not have any specific market of their own. However, like the bonds the majority of their markets are over- the-counter types.

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Large variations in stock prices happen with sufficient frequency to raise doubts about existing models, which all fail to account for non-Gaussian statistics. We construct simple models of a stock market, and argue that the large variations may be due to a crowd effect, where agents imitate each other's behavior. The variations over different time scales can be related to each other in a systematic way, similar to the Levy stable distribution proposed by Mandelbrot to describe real market indices

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