QQQM, also known as a smaller version of QQQ, invests in the largest domestic and international stocks listed on Nasdaq. QQQM reflects companies from all major sectors, except financial firms, as classified under the Industry Classification Benchmark. Eligible security types are traded stocks, tracking stocks, shares of beneficial interest, limited partnership interests, and ADRs. Holdings are weighted using a methodology that is a hybrid of equal and market-cap weighting. Under this methodology, each issuer is capped at 24% weight. In comparison, QQQM is marketed towards buy and hold investors and QQQ may be preferred for trading purposes. The index is rebalanced quarterly and reconstituted annually.