This is the KDJ indicator. KDJ is a random indicator. The principle of KDJ indicator Random indicator KDJ is a complete KDJ indicator that can reflect the price fluctuation trend by calculating the highest price, the lowest price and the closing price, and obtaining a point consisting of K value, D value and J value on the coordinate of the indicator, and connecting countless such points. It is a technical tool that mainly uses the real amplitude of price fluctuation to reflect the strength of price trend and the phenomenon of overbought and oversold, and sends out buying and selling signals before the price rises or falls. In the design process, the relationship between the highest price, the lowest price and the closing price is mainly studied, and some advantages of the concept of momentum, power index and moving average are also integrated, so the market can be judged quickly, quickly and intuitively. Stochastics KDJ first appeared in the form of KD index, which was developed on the basis of William index. However, William indicator only judges the overbought and oversold phenomenon of stocks, while KDJ indicator integrates the concept of moving average speed, forming a more accurate basis for buying and selling signals. In practice, K-line and D-line cooperate with J-line to form KDJ index. Because KDJ line is essentially a concept of random fluctuation, it is more accurate to grasp the short-term trend of the market. The calculation method of KDJ index KDJ is complicated. First, the periodic RSV value (n days, n weeks, etc. ) should be calculated, that is, the immature random index value, and then calculate the K value, D value, J value and so on. Taking the calculation of daily KDJ value as an example, the calculation formula is n-day RSV = (Cn-LN) ÷ (HN-LN) × 100, where Cn is the closing price on the nth day; Ln is the lowest price in n days; Hn is the highest price for n days. The RSV value always fluctuates between 1 and 100. Secondly, calculate K value and D value: K value of the day = 2/3× K value of the previous day +65438+ 0/3× D value of RSV of the day = 2/3× D value of the previous day +65438+ 0/3× K value of the previous day. If there is no K value and D value of the previous day, it can be replaced by 50 respectively. J value =3* K value of the day -2* D value of the day. Take the KD line with a period of 9 days as an example. First, the RSV value of the last 9 days, that is, the immature random value, must be calculated. The calculation formula is RSV = (C-L9) ÷ (H9-L9) × 100 on the 9th day, where c is the closing price on the 9th day; L9 is the lowest price in 9 days; H9 is the highest price in 9 days. K value =2/3× K value on the 8th day+1/3× RSV D value on the 9th day =2/3× D value on the 8th day+1/3× K value on the 9th day =3* K value on the 9th day -2* D value on the 9th day. If there is no K value and D value on the previous day, you can.