Therefore, try to avoid varieties similar to the above Nord 300A, because its trend has completely deviated from the fundamentals, and choose varieties with daily turnover above10 million. Implicit rate of return in the case of no worries about liquidity, naturally choose the grade A with high returns. As far as the current market situation is concerned, the mainstream A-level can be divided into one-year fixed deposit rates of 3, 3.2, 3.5 and 4. Recently, the market has stepped back step by step, and 3000 points are in jeopardy. There are also many problems to pay attention to when purchasing Grade A "hedging". Buying Grade A to redeem the stop loss may not be able to effectively recover the loss. For the holders who are on the edge of the discount of graded B shares, if they want to buy the graded A portfolio stop loss, it is best that both A shares and the parent fund are in a high discount state in order to achieve the effect of combined redemption stop loss. Judging from the current situation, several graded funds on the edge of the recent market, both the A share and the overall premium rate of the parent fund, are in a slightly discounted state. Therefore, buying Grade A does not necessarily have a stop loss effect. The strength of the stock market and the trend of the stock market are the biggest uncertain factors affecting the performance of Grade A, and the price of Grade A is influenced by the price of parent fund and B, which is closely related to the trend of the stock market. Due to the existence of discount premium arbitrage, the higher discount premium level of the parent fund is unsustainable, and the discount rate of A is roughly close to the premium rate of B, so grading A and grading B presents a pattern of "you are strong and I am weak".