The main business of an investment company is to hold and manage securities for investment purposes. In today competitive market Pricing and its methodology are complicated motions. It is very important to define a price that can prevail the competition in an open and free market. In order to define the price certain circumstances should be considered. In the academic arena there have been seve...

We demonstrate how pricing functionals give rise to pricing measures, using a time-independent framework. For infinite market state spaces, the Gel’fand spectral theory is used to obtain the pricing measure. Pricing functionals with additional market information are shown, within this model, to be given by conditional expectations.