Abstract

Economic Cycles in economy have great role in making decisions the formation and cycles of the Arms as stock market investors in the economical environment must take up very important thing changeable thing in business decisions. In this context, the types of economic cycles, the decisions of the firm investments and firm stock market investments have been studied. Investment principles, investment types, investment areas preferred by the firms as stock and investment funds, portfolio management, portfolio types, and portfolio selection approaches has been explained.