The article proves the necessity of analyzing the dynamics of stock indexes from different countries of the world. The research included: reviewing their history, reviewing their calculation methods, highlighting shortcomings and the benefits of using them.
In the article has been analysed the approach to accounting the outlay and methods
aimed to take strategical decisions and appropriate efficient tactical decisions taking into
account all product lifecycle peculiarities. An absence of complex research in the native science
and practice dedicated to the development of calculation methods in the steps of the product
lifecycle determines the actuality of the given problem.
Methods for calculation of the stages of the life cycle ofa product is one of the priority