How does the New York Stock Exchange work?

Available for over a year

The New York Stock Exchange is the largest in the world, valued today at over $25 trillion - but does it spread wealth or increase inequality? And what market forces are at play? Claire Graham asks the BBC’s North America business correspondent Erin Delmore the big questions. We also find out what stock market indexes like the Dow Jones actually measure, and which stocks are dubbed the ‘Magnificent Seven’.