ETF is also a fund, but it is a passive index fund with less risk than an active fund. The trend of its transaction price and fund share net value is basically consistent with the tracked index. Investing in ETF is equivalent to buying and selling the index it tracks, and you can get the benefits and risks basically consistent with the index.

If there is a stock account, investors can buy ETFs in the market and buy and sell them with lower transaction costs. If you don't have a stock account, you can buy and sell OTC funds through financial software, but the cost is relatively high.