Invesco QQQ Trust is a passively managed ETF that tracks the Nasdaq-100 Index, offering exposure to 100 of the largest non-financial companies listed on Nasdaq. The fund uses a modified market-cap weighting approach and is typically concentrated in large-cap growth businesses across technology, communication services, consumer internet, semiconductors, software, cloud computing, AI, streaming, and electric vehicles. QQQ is highly liquid and transparent, often used as a proxy for U.S. technology growth beta, but its performance is meaningfully influenced by mega-cap technology earnings, valuations, and index concentration.