KDJ

KDJ指标（又称随机指标）通常被归类为振荡指标 (Oscillators) 或 动量指标 (Momentum Indicators)。
Of course. Here is a description of the KDJ indicator in English.
KDJ Indicator (Stochastic Oscillator)
The KDJ indicator is a momentum oscillator used in technical analysis to identify overbought and oversold conditions in a market, as well as to spot potential trend reversals. It's an extension of the classic Stochastic Oscillator and is particularly popular among traders in Asian markets.
The indicator consists of three lines:
* %K Line (The Fast Line): This line measures the current closing price relative to the high-low range over a specified period (typically 9 periods). It shows the immediate momentum of the asset.
\%K = 100 \times \frac{C - L_n}{H_n - L_n}

Where:
* C = Current Closing Price
* L_n = Lowest low over the last 'n' periods
* H_n = Highest high over the last 'n' periods
* %D Line (The Slow Line): This is a simple moving average (SMA) of the %K line (typically a 3-period SMA). It smooths out the fluctuations of the %K line and provides more reliable trading signals.
* J Line: The J line represents the divergence between the %D line and the %K line. It is more sensitive than the other two lines and can provide earlier signals. It is calculated as:
How to Interpret the KDJ Indicator:
* Overbought & Oversold Conditions:
* Overbought: When the KDJ lines rise above 80, it suggests the asset is overbought and the price might be due for a correction downwards. A sell signal is often generated when the lines cross back below 80.
* Oversold: When the KDJ lines fall below 20, it suggests the asset is oversold and the price may be poised for a rebound. A buy signal is often generated when the lines cross back above 20.
* The J line can go above 100 (extreme overbought) or below 0 (extreme oversold), indicating a very strong momentum that might precede a sharp reversal.
* Crossovers (Crosses):
* Golden Cross (Bullish Signal): When the %K line crosses above the %D line, especially in the oversold area (below 20), it is considered a strong buy signal.
* Death Cross (Bearish Signal): When the %K line crosses below the %D line, particularly in the overbought area (above 80), it is considered a strong sell signal.
* Divergence:
* Bullish Divergence: If the asset's price makes a new lower low, but the KDJ indicator makes a higher low, it signals that the downward momentum is weakening and a potential price reversal to the upside is coming.
* Bearish Divergence: If the asset's price makes a new higher high, but the KDJ indicator makes a lower high, it suggests that the upward momentum is fading and a potential price reversal to the downside may occur.
In summary, the KDJ is a versatile momentum indicator that helps traders identify short-term entry and exit points by analyzing an asset's price momentum.