K-line: just a set of price information, which can represent the opening price, highest price, lowest price and closing price of minutes, hours, days, weeks, months, seasons and years.
Quantity: that is, the volume of transactions, generally corresponding to the above time to reveal the corresponding volume.
Index: it is the general name of various mathematical calculations and statistics of stock price and volume changes. For example, trend indicators, fluctuation indicators (overbought and oversold), energy indicators (combination of volume and price), moving average indicators, chart indicators and so on. K-line is a chart indicator.
Each specific indicator generally has a meaning, and you can also analyze and judge its meaning according to the indicator formula.
For example, the commonly used KDJ indicator is a typical overbought and oversold indicator. People who are suitable for short-term jobs. (Of course, this requires a lot of skill in parameter setting. )
Where k and d are a set of curves respectively summarized and abstracted from the data and mathematically processed; J is a curve related to the change of k and d; The variation range of the curve (ordinate) is 0- 100.
Use of indicators:
1. as a signal of overbought and oversold. When J & gt80 points, the stock price is generally at a relatively high level (overbought), and the callback probability is high; At J & lt20, the price may rebound (oversold) at a relatively low level; When the KDJ index is near 50, it is basically meaningless.
2. As a trading signal, when the K line is 20 or below and crosses the D line upwards, it can be regarded as a buying signal; When the K-line is 80 or above and crosses D downwards, it is regarded as a sell signal;
3. If the parameters are appropriate, when the J-line approaches 100, the stock price has a downward trend. When the J line is close to 0, the stock price tends to reverse and rise;