The main lock position is pulled up, which means that the dealer holds a large number of chips and pulls up after being in the high control position. Generally concerned by the market, the stock trend is stronger than the index.

Locking-an important magic weapon of master control. The so-called lock-in is an operation method in which futures traders open positions in the same amount but in the opposite direction, so that no matter where the futures price changes (or rises or falls), the position profit and loss will not increase or decrease. Although this method is cumbersome for those who strive for simple operation, it is not conducive to saving transaction costs for those who advocate open source and reduce expenditure, and it is often counterproductive for most retail investors who want to avoid risks; However, it is a magic weapon to apply this method to large futures companies, especially those with a controlling position. The following will discuss several situations in which the main force uses the lock-up operation to control the market and seek greater benefits for traders' reference.