The Invesco Dorsey Wright Healthcare Momentum ETF (PTH) is structured to mirror the performance of the Dorsey Wright Healthcare Technical Leaders Index. This exchange-traded fund typically allocates a minimum of 90% of its total assets to the equities found within this benchmark index. The Index itself is specifically engineered to identify healthcare companies that demonstrate strong "relative strength," which indicates significant momentum. It consists of no fewer than 30 individual securities selected from the broader NASDAQ US Benchmark Index. "Relative strength" refers to the process of evaluating a particular security's performance against other comparable investments within its designated market segment over a specific duration. Both the Fund and its underlying Index are subject to quarterly rebalancing and reconstitution.