Many softwares count buying large orders as inflow funds and selling large orders as outflow funds.
Then we can consider the main force to control the inflow and outflow of funds.
For example, when shipping, buy with a small number of large orders to form the illusion of net inflow, and then sell with a large number of small orders. Selling small orders is not a net outflow, so in the case of capital inflow, the stock price falls.
Extended data:
The direction of capital flow and the direction of the index are not exactly the same, they are generally very similar, but in the following two cases, people tend to look at the capital flow index:
1. When the capital flows in the opposite direction to the fluctuation of the plate index on that day:
For example, the index of a certain sector generally falls all day, but the flow of funds shows that the net inflow of funds in this sector is positive all day.
2. When there is a big deviation between the current capital flow and the fluctuation of the sector index:
For example, the index of a certain sector rose very high all day, but the actual net inflow of funds into the sector was very small.
When the capital flow deviates from the stock price or a certain sector index, the capital flow can better reflect the actual situation of the market than the stock price or a certain sector index.
Baidu encyclopedia-net inflow and net outflow