The Invesco Water Resources ETF (PHO) is a smart beta ETF tracking the NASDAQ OMX US Water Index with $1.96 billion in assets. With a 0.59% expense ratio and 43 holdings, PHO offers concentrated exposure to water-related companies, primarily in the Industrials sector.
Year-to-date performance shows modest gains of 0.47%, though it's down 4.44% over the past year. The fund carries medium risk with a beta of 0.95 and is compared to alternative water ETFs like CGW and FIW.