  We find the wealth distribution for an economic agent in the financial
market, in analogy with standard derivation of generaliz Boltzman (Tsallis)
factor in statistical mechanics. In this respect, Tsallis entropic index
separates two different regimes, the large and small size market. The Pareto
like wealth distribution is obtained in the case of small size market. A method
for computing the premium is suggested based on the surplus average vanishing.
