There are countless types of exchange-traded funds (ETFs). In the market, there are ETFs related to different industries/ sectors/ commodities. The scale of funds are large and managed by systematic management methods. ETFs can facilitate investor to invest in a field, rather than a single company.
ETFs are traded in the same way as other securities, and investors can buy and sell through brokers during trading hours. As a passively managed open-end fund, investors must understand the risk level they can bear and understand the details of individual products, refer to the prospectus and website of individual ETFs, and consult their securities dealers or investment advisors about the pros and cons of the product.