Yes After dividends, the stock price should be ex-dividend, that is, the stock price should be reduced and the cost of holding positions will also be reduced. Position cost refers to the price at the time of purchase. The cost of holding positions usually includes handling fees. If you buy stocks or funds at one time, the cost of holding positions will not change. However, if you increase or decrease positions during the holding period, the cost of holding positions will change with the rising and falling prices.