The United States of America is being the top country by market capitalization, current US$ in the world. As of 2015, market capitalization, current US$ in the United States of America was 25,067,539 million current US$ that accounts for 41.13 % of the world's market capitalization, current US$. The top 5 countries (others are China, Japan, Hong Kong, and France) account for 71.24 % of it. The world's total market capitalization, current US$ was estimated at 60,950,936 million current US$ in 2015.
Market capitalization (also known as market value) is the share price times the number of shares outstanding. Listed domestic companies are the domestically incorporated companies listed on the country's stock exchanges at the end of the year. Listed companies does not include investment companies, mutual funds, or other collective investment vehicles.