You can understand that these two purchases are mixed up. But from what you say, it seems that you don't understand some common sense of funds.

① When purchasing a fund, if it is purchased before the trading day 15, the share will be calculated according to the "net unit value" of the day after deducting the subscription fee. For example, on June 12, the Shanghai-Shenzhen 300 Index is 5335. 12, and the unit net value of E Fund's Shanghai-Shenzhen 300ETF connection is 1.6443, so if you subscribe for the fund for 5000 yuan at 15 before June 12,

(2) You buy again after the index falls, for example, in June 19, when the net value is 1.4436, and you want to buy another 5,000 yuan, then you have about 3,463 copies (I did a rough calculation, regardless of the subscription fee).

(3) At this time, you have * * * 3040+3463 = 6503 shares. Pay attention to your number of shares! And your market value is also the current unit net value multiplied by the number of shares you own. A certain "share" was redeemed at the time of redemption, and then multiplied by the net value of the day (redeemed before 15), and the cash was obtained after deducting the redemption fee. I don't know whether it was bought at 5000 or 4000.