Invesco Global Water ETF (PIO) is an exchange-traded fund that seeks to track the investment results of the S&P Global Water Index, composed of developed market companies involved in water utilities, water infrastructure, and water treatment worldwide.
The ETF provides investors with exposure to companies engaged in water-related activities, including water supply and distribution; water storage and transportation; water treatment technologies such as purification, desalination, and wastewater management; and related equipment manufacturing and engineering services. It holds a diversified portfolio of approximately 100 holdings, with key sectors encompassing utilities (around 40%), industrials, and materials; top constituents typically include global leaders like American Water Works, Xylem Inc., and Ecolab Inc. The fund employs a full replication strategy, investing at least 90% of its assets in index components, and is passively managed with an expense ratio of 0.75%.
Launched in 2007 and domiciled in the United States under Invesco Ltd., headquartered in Atlanta, Georgia, the ETF operates globally with primary exposure to North America (over 50%), Europe, and Asia-Pacific markets, targeting institutional and retail investors focused on thematic sustainability and ESG strategies.
Recent developments include the index's rebalancing to incorporate emerging water technology innovators amid growing global water scarcity pressures, alongside Invesco's broader enhancements to its ETF suite through strategic integrations of AI-driven analytics for portfolio optimization in late 2024. No major acquisitions or name changes have occurred, though the fund benefited from heightened inflows during 2025's climate-focused investment surge.