The ticker symbol for the Nasdaq 100 Trust, an ETF that trades on the Nasdaq. This security offers broad exposure to the tech sector by tracking the Nasdaq 100 Index, which consists of the 100 largest and most actively traded non-financial stocks on the Nasdaq. It is also known as "cubes" or the "quadruple-Qs". This was formerly known as the QQQ. Taobiz explains QQQQ The QQQQ is a great way to invest in the long-term prospects of the technology industry. It offers diversification across various companies and business types with a range of market caps.