According to the data of Baidu Encyclopedia, the position refers to the ratio of the market value (amount) of money held by investors to the total investment. In the futures market, open position refers to the sum of positions bought (or sold) before open position, and generally refers to the sum of open contracts in the buying and selling directions, also known as order quantity, which is generally even. By analyzing the change of positions, we can analyze the size, change and renewal of long and short forces in the market, thus becoming one of the technical analysis indexes different from stock investment.

In the analysis of futures graphic technology, it is very important to cooperate with each other in volume and position. A correct understanding of the relationship between trading volume and position change can help us grasp the combination of graphic K-line analysis more accurately and help us understand the market language more deeply.