First Trust Materials AlphaDEX Fund (FXZ) is an exchange-traded fund that seeks investment results tracking the StrataQuant Materials Index, a modified equal-dollar weighted benchmark designed by NYSE Arca to select stocks from the Russell 1000 Index using the proprietary AlphaDEX screening methodology to identify securities with potential for positive alpha relative to traditional passive indices; the fund provides exposure to large- and mid-cap U.S. companies in the materials sector, including chemicals, metals and mining, construction materials, paper products, and containers and packaging, with approximately 38 holdings such as Avery Dennison Corp., Element Solutions Inc., and Freeport-McMoRan Inc.. The fund employs a physical replication strategy, holding securities in tiered equal weights based on growth, value, and other fundamental metrics, while maintaining a focus on the broad materials industry segment for investors seeking concentrated sector exposure with medium risk characteristics, evidenced by a three-year beta of around 1.15 and standard deviation of 22.60%.. Launched on May 8, 2007, and domiciled in the United States, FXZ is advised by First Trust Advisors L.P., an affiliate of First Trust Portfolios L.P., with assets under management exceeding $200 million as of late 2025 and shares trading on NYSE Arca.. Recent developments include increased institutional interest, with investors such as Private Advisor Group LLC expanding holdings by 11.8% and Harbour Investments Inc. by 6.1% during the first quarter of 2025, alongside routine portfolio rebalancing and a December 12, 2025, announcement of distributions for exchange-traded funds advised by First Trust Advisors L.P., amid ongoing share price appreciation reaching approximately $60.33 per share in November 2025.. The fund targets institutional and retail investors focused on U.S. materials equities, with no reported acquisitions, mergers, or major strategic shifts in the past 1-2 years, maintaining its core index-tracking mandate without significant operational changes..