The New York Stock Exchange and NASDAQ make up the vast majority of the trading volume throughout the world. That does not mean you have to limit yourself to those two exchanges. You can also trade stocks from different exchanges throughout the world. These include the Japan Stock Exchange, Shanghai Stock Exchange, Euronext, and the London Stock Exchange. Additionally, the economy in one country might be radically different from another. For instance, there could be a bull market in Canada where the TMX Group exchange is based or in Germany where people trade on the Deutsche Borse. Meanwhile, a bear market in India might cause the Bombay Stock Exchange and National Stock Exchange of India to fall in value. Therefore, it is best to stay with stocks based out of exchanges with which you are familiar. You would have to research markets outside of the NYSE or NASDAQ. Just because an American stock is doing well does not mean that every other exchange in the world is going to perform the same. The American markets are easier to analyze.