Vanguard Materials ETF seeks to track the investment performance of the MSCI US Investable Market Materials 25/50 Index, a benchmark of large-, mid-, and small-cap United States stocks in the materials sector, as classified under the Global Industry Classification Standard (GICS). This GICS sector is made up of companies in a wide range of commodity-related manufacturing industries. Included within this sector are companies that manufacture chemicals, construction materials, glass, paper, forest products, and related packaging products, as well as metals, minerals, and mining companies, including producers of steel. The Vanguard Group, Inc., through its Quantitative Equity Group, serves as the investment advisor of the Fund.