One approach is to use technical analysis tools such as the Fast Fourier Transform (FFT) to identify repeating patterns in the data. Other approaches include using time series analysis techniques like decomposition, filtering, and spectral analysis.

Let’s start with technical analysis tools like FTT

The Fast Fourier Transform (FFT) is a mathematical algorithm that is used to identify repeating patterns in a time series data set. It works by decomposing a signal into its individual frequency components, which can then be analyzed separately. This can be especially useful for identifying periodic patterns in stock prices, as well as for predicting future price movements based on these patterns.

To use the FFT to analyze stock prices, you would first need to gather a time series data set of the stock’s historical prices. This could be daily, weekly, or even hourly prices, depending on your analysis goals. Once you have this data, you can apply the FFT algorithm to decompose the signal into its individual frequency components.

The resulting frequency spectrum can then be used to identify any repeating patterns in the data. For example, if you see a strong peak at a certain frequency, it may indicate the presence of a repeating pattern with a period equal to that frequency. You can then use this information to make predictions about the stock’s future price movements based on the identified pattern.

Another approach to extracting and analyzing cycles in stock prices is to use time series analysis techniques like decomposition, filtering, and spectral analysis.

Decomposition is a technique that is used to separate a time series data set into its individual components, such as trend, seasonality, and residuals. This can be useful for identifying long-term trends in stock prices, as well as for detecting any cyclical patterns that may be present.

Filtering is another time series analysis technique that is used to remove noise and unwanted fluctuations from a data set. This can be especially useful for isolating important patterns and trends in stock prices, and for improving the accuracy of predictive models.

Spectral analysis is a technique that is used to identify the frequency components of a time series data set. It works by decomposing the data into a series of sine waves with different frequencies, which can then be analyzed separately. This can be useful for identifying repeating patterns in stock prices, as well as for making predictions about future price movements based on these patterns.

I hope this helps to give you a better understanding of the different approaches that can be used to extract and analyze cycles in stock prices! Let me know if you have any questions or if you would like more information on any of these techniques.