ETF Sector: Financials A financials ETF is an exchange-traded fund that tracks the financial sector. This includes banks, insurance companies, real estate firms, and other businesses that provide financial services. Financials are a vital part of the economy, and the financial sector includes some of the largest and most influential companies in the world. The financials ETF gives investors exposure to this important sector, without having to buy individual stocks. The financials ETF is a diversified way to invest in the financial sector, and it can be a useful tool for hedging against economic uncertainty.