Transactional open-end index funds, also commonly known as Exchange Traded Funds (ETF), are an open-end fund with variable fund shares listed on the exchange.

according to different investment methods, ETFs can be divided into index funds and actively managed funds, and most ETFs abroad are index funds. ETF launched in China is also an index fund.

ETF index funds represent the ownership of a basket of stocks, and refer to index funds that are traded on the stock exchange like stocks, and their trading prices and net fund share trends are basically consistent with the tracked indexes. Therefore, investors buy and sell an ETF, which is equivalent to buying and selling the index it tracks, and can obtain basically the same income as the index. Usually, a completely passive management method is adopted, aiming at fitting an index, which has the characteristics of both stocks and index funds. Extended information

Transactional open-end index funds are essentially index funds, but different from traditional index funds, transactional open-end index funds can be listed on exchanges, so that investors can buy and sell a fund representing the "underlying index" just like buying and selling stocks.

Trading open-end index fund is a special open-end fund, which not only absorbs the advantages of closed-end fund trading open-end index fund to trade in real time on the same day, but also allows investors to buy and sell trading open-end index fund shares in the secondary market just like buying and selling closed-end funds or stocks. It also has the advantage that open-end funds can be purchased and redeemed freely. Investors can purchase or redeem the shares of transactional open-end index funds from fund management companies just like buying and selling open-end funds.

Reference: Baidu Encyclopedia-Trading Open Index Fund