Since you said it was after the market closed, how could the price fluctuate? Definitely not moving, otherwise how can there be a closing price! Of course, let alone a deal!
Market value gains and losses are the total gains and losses since holding positions today. Remember, this is the same day. Floating profit and loss is the total profit and loss since the opening of the position, no matter how long! When the market closes, the profit and loss of the market will be zero, because it can no longer trade. Look at mine. It's closed now.
Also, if the price changes quickly, the average price often can't keep up with the real-time price. You may see a lot of profit and loss before the close, but after the close, the software calculates the profit and loss according to the average price, so the amount becomes smaller. After all, the benchmark opening price of the next day is the average closing price of the previous day. Of course, the real opening price is not necessarily what it looks like, so let's take a look at the results of call auction before the opening.
Of course, the software used is different, and what I said is not necessarily correct. Personal opinion, throw a brick to attract jade.