ETF is an index fund, which mainly tracks stock index and industry index. The stock index is simply the stock index, Shanghai Stock Exchange Index, Growth Enterprise Market Index, Shenzhen Stock Exchange Index, etc. These are the mainstream indexes at present.

So the difference between ETF and stock index comes out. ETF funds are wealth management products, but stock indexes are not. You can only invest in financial products derived from stock indexes, such as stock index futures and stock index options. For ETF funds. Both stock index and industry index are the reference and tracking objects of ETF funds.