ProShares Big Data Refiners ETF is an exchange traded fund launched and managed by ProShare Advisors LLC. The fund invests in the public equity markets across the globe. It invests in the stocks of companies that provide analytics and infrastructure for extracting information from large data sets sector. It invests in growth and value stocks of companies across diversified market capitalizations. The fund invests in securities that ProShare Advisors believes, in combination, should track the performance of the index. ProShares Big Data Refiners ETF is domiciled in the United States.