KDJ index, also known as stochastics, is a very novel and practical technical analysis index. It was first used in the analysis of futures market, and then widely used in the short-term trend analysis of stock market. It is the most commonly used technical analysis tool in futures and stock markets. Stochastic indicator KDJ is usually a statistical system used for stock analysis. According to the statistical principle, the immature random value RSV of the last calculation period is calculated by the highest price, lowest price and closing price of the last calculation period in a specific period (usually 9 days, 9 weeks, etc.). ) and the proportional relationship between them. Then, according to smma method, the K value, D value and J value are calculated, and the stock trend is judged by drawing.
Kdj originated in the futures market and was initiated by george ryan. Stochastics KDJ first appeared in the form of KD index, which was developed on the basis of William index. However, the KD indicator only judges the overbought and oversold phenomenon of stocks, while the KDJ indicator combines the concept of moving average speed to form a more accurate basis for buying and selling signals.