As an investor you aim to buy low and sell high. But what is low and what is high?
Technical analysis allows you to observe historical changes in the price of the underlying share. It is based on the fact that all events in the market, either economic or activity related to the company, are reflected in the historical chart. Obviously, it will never be 100% accurate in predicting. However, it can provide you, as an investor, a benchmark on which to base your decisions.