Financial Dictionary abcdefghijklmnopqrstuvwxyz Search for terms: QQQQ Formerly known as QQQ, is the NASDAQ 100 Index Tracking Stock. QQQQ offers investing in 100 most actively traded stock in the technology industry by owning just one security. QQQQ is also known as “quadruple-Qs” and “cubes.” Tweet Related Terms Quasi Contract Quantitative Easing Quant Fund Quarterly Earnings Report Quantity Theory Of Money Quiet Period Quote Driven Market Quadruple Witching Quanto Option Quasi-Public Corporations