Open the position, and the bears take the initiative to open the position. Double opening, new long position and new short position. Open more, and the bulls take the initiative to open positions. Empty and flat, bears take the initiative to close their positions. Shuangping, the old cow and the old bear closed their positions. How flat, the bulls take the initiative to close the position. Short positions change hands: short positions change hands, that is, the old positions are bought and closed, and the new positions are sold and opened; Multi-exchange: multi-positions change hands, that is, the old ones sell and close positions, and the new ones buy and open positions. Spot: the number of open positions at this time: the sum of all open positions, and the stock index is calculated unilaterally, that is, the one-more empty position is 1 hand position difference: the comparison between the current position and the closing position of the previous trading day. The warehouse difference is a positive increase, and the warehouse difference is a negative decrease.