Index formula of main capital flow in futures

The formula is: main capital flow = main contract turnover/main contract position. When the trading volume and positions of the main contract increase, the index of the main capital flow will rise, which means that the market capital outflow is more than the capital inflow. On the contrary, the main contract trading volume increases, the positions decrease, and the main capital flow index will decrease, indicating that there are more capital inflows than capital outflows in the market. The main capital flow index of futures is a technical index reflecting the change of capital flow in futures market. Mainly through the analysis of the main contract turnover and positions to judge the trend of capital flow.