# Calculation tools

For this website, calculation tools are developed which should make investment decisions. One example of such a calculation tool is the calculation of the theoretical value of a stock. The calculations are mostly based on extrapolations of historical data.

The discount model is the first calculation module which is available. This model is used by successful investors like Warren Buffett to calculate the price of a stock. Because different investors have different perceptions about the calculation of a stock price, this tool has been developed as flexible as possible.