Key Points The Nuveen Nasdaq 100 Dynamic Overwrite Fund was founded in 2007 and is one of the oldest covered call funds, and has been a consistent wealth building tool since its inception. Case in point: The Nuveen NASDAQ 100 Dynamic Overwrite Fund (NASDAQ: QQQX). QQQX tracks the Nasdaq 100 Index, which is loaded with technology stocks and other fast moving securities listed on Nasdaq. QQQX is designed to take advantage of the inherent higher volatility of the Nasdaq 100 by utilizing a covered call strategy on 35-75% of its portfolio. The trade off is a more stable, albeit less aggressive tracking of the Nasdaq 100.