I only know that Masukura is the current position MINUS the position at yesterday's closing, which is the current Masukura, also known as the position difference.

As for what the landlord said, it has nothing to do with this.

You can't answer this question unless you know how many empty orders there were yesterday.

In addition, there are many orders, empty orders, double orders and double orders on the same day. If you want to use these data to calculate Masukura, it means that the head is big.