1. when the upper, middle and lower tracks of bollinger band run upward at the same time, it shows that the strong characteristics of the stock price are very obvious, and the stock price will continue to rise in the short term, so investors should resolutely hold shares to rise or buy on dips.

2. When the upper, middle and lower tracks of the Bollinger Band run down at the same time, it shows that the weakness of the stock price is very obvious, and the stock price will continue to fall in the short term. Investors should resolutely wait and see or sell on rallies.

3. When the upper rail of the Bollinger Band runs down, while the middle rail and the lower rail are still running up, it shows that the stock price is in a consolidation situation. If the stock price is in a long-term upward trend, it shows that the stock price is a strong consolidation on the way up, and investors can wait and see or buy short-term on dips; If the stock price is in a long-term downward trend, it shows that the stock price is a weak consolidation on the way down, and investors should wait and see by holding money or lightening their positions on rallies.

4. When the upper rail line of the bollinger Band runs upward, the possibility that the middle rail line and the lower rail line run downward at the same time is very small.

5. When the upper, middle and lower tracks of the Bollinger Band run horizontally almost simultaneously, it depends on the current trend of the stock price.

(1) When the three lines of the Bollinger Band begin to move horizontally after the stock price has been falling for a long time in the early stage, it shows that the stock price is at the bottom stage, and investors can start to open positions in batches and in small quantities, and once the three lines diverge upwards, they can increase their buying efforts.

(2) When the stock price was slightly rising in the early stage, the three lines of the Bollinger Band began to move horizontally, indicating that the stock price was in the rising stage to sort out the market, and investors could hold shares to be rising or absorb them on dips in the short term, and once the three lines diverged upward, they could buy them in the short term.

(3) When the stock price has just experienced a round of sharp decline, the three lines of the Bollinger Band begin to move horizontally, indicating that the stock price is in a downward stage of consolidation. Investors should mainly wait and see and lose pounds on rallies, and once the three lines diverge downward, they will resolutely clear their positions and leave.

(4) It is extremely unlikely that the three bollinger bands will move laterally at the top.

application of p>KDJ

1. Generally speaking, the D line turns from the bottom to the top as a buying signal, and from the top to the bottom as a selling signal.

2, KD both fluctuate in the range of ~ 1, and 5 is the long-short equilibrium line. If you are in a multi-party market, 5 is the support line for the return file; If you are in the empty market, 5 is the pressure line for the rebound.

3. The K-line crosses the D-line at the low position as a buying signal, and the K-line crosses the D-line at the high position as a selling signal.

4. When the K-line enters above 9, it is an overbought area, and below 1, it is an oversold area; Line D is an overbought area when it enters above 8, and an overbought area when it enters below 2. Pay attention to the timing of buying and selling.

5. The M-shaped trend of the D-line in the high-grade area is a common top shape, and the second head appears and the K-line crosses the D-line for the second time, which is a selling signal. The W-shaped trend of D-line in low-grade area is a common bottom shape, and when the second bottom appears and the K-line crosses the D-line for the second time, it is a buy signal. When the M-shaped or W-shaped second part appears, if it deviates from the price trend, it is called "top divergence" and "bottom divergence" respectively, and the buying and selling signals are highly reliable.

6. the j value can be greater than 1 or less than .J indicator provides a credible judgment on whether actions can be taken based on KD trading signals. Usually, when the value of J is greater than 1 or less than 1, it is regarded as the opportunity to take trading action.

7. KDJ is essentially a random fluctuation index, so the value of n in the calculation formula is usually small, and it is appropriate to take 5 to 14, which can be selected according to the characteristics of the market or goods. However, applying KDJ to weekly or monthly charts can also be used as a tool for medium and long-term forecasting.