The stock trading system of most securities companies can buy and sell stocks and apply for redemption of funds, but the functional modules are separated, and the funds subscribed by the fund modules are all open. There are both open-end funds and closed-end funds that trade under the stock system. LOF and ETF funds are open-ended, while "fund open source" and "fund Tianyuan" are closed, and both of them can be bought and sold in the trading system like stocks.

LOF, the full name of which is "Listened Open-Ended Fund" in English and "Listened Open-Ended Fund" in Chinese, is familiar with topics such as Bosera, Penghua Power and China Industry Selection. ETF is called "Exchange TradeFunds" in English, that is, "Exchange Trade Funds". At present, ETFs are all index funds, including AIA Huatai SSE Dividend ETF, Huaxia SSE 50ETF, Huaan SSE 180ETF, Yifangda SZSE 100ETF and Huaxia SME ETF.

I won't say much about Kigai, there are many articles on the Internet.