Answer to Question #54497 in Macroeconomics for chris

Question

Share markets all over the world often increase or decrease together. Why do you think it is the case?

Answer 1

A stock market or equity market is the aggregation of buyers and sellers of stocks (also called shares); these may include securities listed on a stock exchange as well as those only traded privately.
There is a nearly infinite number of factors that can cause the stock market to move significantly in one direction or another. This can include such things as economic data, geopolitical events and market sentiment.