There are also many index funds, such as QDII funds, such as Huabao Oil&Gas (1624 1 1), Standard & Poor's 500(5 13500) and small and medium-sized Hong Kong (50102). Typical representatives of on-exchange currency ETFs are Huabao Tianyi (5 1 1990), Yin Hua Rili (5 1 1880) and Jianxin Tianyi (51/660). 1.QD funds refer to funds invested by domestic investors in overseas capital markets. At present, QDII funds in China mainly invest in American stock market and Hong Kong stock market, with typical representatives including Huabao Oil&Gas (1624 1 1), Standard & Poor's 500(5 13500) and small and medium-sized Hong Kong (50102/kloc-0). 2. On-site currency ETF On-site currency ETF refers to a monetary fund that can be traded. Compared with ordinary money funds, the typical representatives of on-site currency ETFs are Huabao Tianyi (5 1 1990), Yin Hua Rili (5 1 1880) and Jianxin Tianyi (51/660). 3. Gold ETF Gold ETF refers to an index fund that invests in gold and tracks the fluctuation of spot gold prices. At present, there are four gold ETF funds, namely E Fund Gold ETF( 159934), Boss Gold ETF (159937), Cathay Pacific Gold ETF(5 18800) and Huaan Gold ETF(5 18880). 4. Index ETF Index ETF is the largest and most common ETF among these four types of ETF funds. The 300ETF(5 10300), Growth Enterprise Market ETF( 1599 15) and 500ETF(5 10500) that investors are familiar with are all index ETF funds. Open-end index fund with data transaction, also known as exchange-traded fund (ETF), is an open-end fund with variable fund share, which is listed and traded on the exchange. It combines the operating characteristics of closed-end funds and open-end funds. Investors can not only purchase or redeem fund shares from fund management companies, but also buy and sell ETF shares in the secondary market at market prices, which has the characteristics of purchase and redemption and listing. According to different investment methods, ETFs can be divided into index funds and actively managed funds. Foreign ETFs are mostly index funds. At present, domestic ETFs are also index funds. ETF fund represents the ownership of a basket of stocks, and refers to index funds that are traded on the stock exchange like stocks. The trend of its transaction price and fund share net value is basically consistent with the tracked index.