ETFs (exchange traded funds) are the simplest way to invest in the stock market. Popular with institutional investors and 50% of American savers, they are starting to make inroads in France.

Created in the 1990s in the United States, ETFs are funds that invest in stocks or bonds. Unlike so-called active funds, ETF managers are content to buy the values making up stock indices. This article is reserved for subscribers. Use the weekly Newsquiz to test your knowledge of stories you saw on CNN iReport.