Of course, etf has another profit model, which needs to be used with the primary market. This is an arbitrage transaction. Etf itself can be purchased and redeemed in the primary market, so it has a fixed net fund value in the primary market, but because it can be bought and sold in the secondary market, it has a transaction price. The difference between the transaction price and the net value of the fund creates space for arbitrage trading, but etf arbitrage has another trouble. However, the subscription of etf is based on a basket of stocks, that is to say, I can't subscribe and redeem as an ordinary fund unit, but want to buy an equal proportion of stocks of the constituent stocks of the index corresponding to this etf, and then replace the etf fund of the corresponding unit with the corresponding proportion. Redemption is also a basket of stocks, which is difficult to arbitrage and involves a large amount, which is not suitable for ordinary retail investors.
If you don't want to try, you can use Shenzhen lof, which is similar to etf, but you can purchase and redeem funds by units and participate in the arbitrage operation in the primary and secondary markets, but now this arbitrage callback is very fast and the operability is not strong. Without specialized trading software, you can basically give up using ordinary software.
I use a software, Xin Caitong, which is very convenient for trading, but it still can't meet this demand. It seems that some professional manufacturers have done this, and some time ago, Everbright made an oolong. It's just software made by an open manufacturer.