The Stoxx Europe 600 exchange-traded fund, or ETF, is a security pegged to the index of the 600 European companies with the largest stocks, according to the company's website. The index tracks the trading of these stocks on the exchanges of 18 European countries.
Stoxx Limited specializes in stock indexes for European companies, including the Europe 600 Index, and licenses them to investment firms, states the company's website. The firm ALPS, headquartered in Denver, Colorado, maintains the ETF based on the Europe 600 Index, reports ETF Database. Exchange-traded funds differ from mutual funds in that they trade on a stock exchange, explains Investopedia.