NASDAQ-100 Index Tracking Stock QQQQ

The QQQQ is the NASDAQ-100 Index Tracking Stock (NASDAQ:QQQQ). It is referred to as "Cubes", "Quad Qs" or simply as "The Qs."

This is an ETF representing the NASDAQ-100. In other words, you can buy and sell QQQQ's just like you would any other stock. The stock will move intraday in line with the NASDAQ-100 Index which is what it is comprised of.