The AMS Investor application distributes investment services into mobile phone devices of end-users. Information on the state and development of assets is available in AMS Investor also when the investor is travelling. The application expands the management of financial activities into smartphones with the aim of a quick control over invested assets. The portfolio value changes depending on the development of market prices of owned assets. The application provides information on price changes of specific securities during the day, which is by virtue responsible for the value change of investment portfolio.