There are many indicators in the stock market software, but the principle is the same. I often use the KDJ contrarian indicator, which means:

1. The stock price is higher than the average level, which is regarded as strong; Below-average stock prices are considered weak.

2. The moving average rises upwards, which contributes to the rising power; The downward decline of the moving average contributes to the downward force;

3. When two or more moving averages cross upward, buy;

4. When two or more moving averages cross downward, sell;

The above is the meaning and application of kdj index. As for whether it is profitable or not, I can't tell you how much it is losing. The specific application depends on my own use.

For your reference, there are actually many applications of indicators, depending on which one you are suitable for.