The Invesco Oil & Gas Services ETF (PXJ) is an investment fund designed to mirror the performance of the Dynamic Oil Services Intellidex Index (the Index). Ordinarily, the ETF allocates a minimum of 90% of its total assets to the common equity securities that constitute this underlying index. The Index employs a rigorous methodology to select its constituents, evaluating companies based on a diverse set of investment merits, such as price momentum, earnings momentum, quality, management effectiveness, and valuation. Comprising 30 U.S.-based firms, the Index focuses on companies central to the oil and gas value chain – from exploration and extraction to processing and distribution. This encompasses businesses involved in drilling operations, manufacturing specialized oil and gas field equipment, or providing essential services to the sector. Such services may range from well analysis, platform and pipeline engineering and construction, logistics and transportation, to emergency management for wells and geophysical data acquisition and processing. Both the ETF and its benchmark Index undergo quarterly rebalancing and reconstitution. These adjustments occur in February, May, August, and November each year.