The trend of OTC funds is not only influenced by the trend of fund themes, but also by the orders in the market, that is, when the orders in the market are far greater than the orders paid, the funds will fall, resulting in their gains being lower than those of OTC funds.

Investors can arbitrage by using the difference between the on-site fund price and the off-site fund net value, that is, when the etf price is greater than the net value on the spot, investors will 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, investors buy etf fund shares at a low price in the secondary market, then redeem the shares in the primary market according to the net value, and then sell the shares in the secondary market to complete arbitrage.