The etf code of the Shanghai Composite Index is 5 102 10, which is both an on-site fund and an off-site fund, that is, investors can trade in the secondary market through stock accounts or through some third-party consignment platforms, such as Tian Tian Fund Network and Love Fund.

Investors can use the difference between the on-site price and the off-site net value of etf funds for arbitrage. The arbitrage method is as follows:

When the etf price in the market is greater than the net value, that is, the fund premium, retail investors can buy a basket of stocks from the secondary market, then convert them into etf fund shares in the primary market according to the net value, and then sell ETFs at high prices in the secondary market to complete arbitrage; When the etf price in the market is less than the net value, that is, when the fund is discounted, retail investors can buy etf fund shares at a low price in the secondary market, then redeem their shares in the primary market at the net value, and then sell them in the secondary market to complete arbitrage.

It should be noted that retail investors use the difference between the on-site price and the off-site net value of etf funds to arbitrage, and the income must be greater than the transaction cost, otherwise the loss will outweigh the gain.