Using Technical Analysis, one can predict future price directions if its looks at the price movement of a security and by extracting information from historical data or a pattern has been trending. Basically, it relies on market force that is, demand and supply. Technical analysis in trading system checks a security from the charts and mainly used for trade for their main aim is to buy assets they believe can sell to someone at higher price.
But again, one cannot rely on technical analysis fully for some unexpected changes can occur forced by unclear circumstances and as a result leading to detrimental situations such as fluctuations. Also stock prices can be analyzed by a company by what it wants to achieve in the long run. It can also evaluate the stock price by sharing. It can give it low prices to those it thinks they can reach and to other major firms a higher trading as in the long run it will have achieved the price range it had targeted.