1. SDIC ETF Linked Fund 161211 tracks the CSI 3 Financial Real Estate Index.

2. Transactional open-end index funds are a special type of open-end funds, which combine the operating characteristics of closed-end funds and open-end funds. Investors can purchase or redeem fund shares from fund management companies, and at the same time, they can buy and sell ETF shares in the secondary market at the market price like closed-end funds. However, the purchase and redemption must be exchanged for fund shares or for fund shares. Because of the existence of securities market trading and subscription and redemption mechanism at the same time, investors can carry out arbitrage trading when there is a price difference between ETF market price and fund unit net value. The existence of arbitrage mechanism makes ETF avoid the common discount problem of closed-end funds.

3. According to different investment methods, ETFs can be divided into index funds and actively managed funds, and most ETFs abroad are index funds. At present, ETFs launched in China are also index funds. ETF index fund represents the ownership of a basket of stocks, which refers to the index fund that is traded on the stock exchange like stocks. Its trading price and the trend of fund share net value are basically consistent with the tracked index. 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.