Trading indicators can be useful for a number of reasons, including: 
 Technical analysis
Los indicadores forman la base del análisis técnico y proporcionan información sobre la oferta y
the demand for securities, as well as market psychology. 

• Identify trends
  Indicators can help determine the trend of the stock market. 
•  Identify entry and exit points

Support and resistance indicators can help identify entry and exit points
más precisos. 

•  Estimate reversal points
  Momentum indicators can help estimate when the market might reverse. 
• Filter emotions
  Los indicadores pueden ayudar a filtrar las emociones en las decisiones de trading. 
• Predicting price movements
  Lagging indicators such as moving average, exponential moving average and
  convergencia/divergencia de medias móviles (MACD), pueden ayudar a predecir los
  movimientos de los precios. 
• Determining the level of risk
  Volatility indicators can help determine the level of risk associated with an asset.

What you need to know before using trading indicators

The first rule of using trading indicators is that you should never use one indicator in isolation or use too many indicators at once. Focus on the ones you feel are best suited to what you are trying to achieve. You should also use technical indicators in conjunction with your own assessment of an asset's price movements over time (price action).

It is important to remember that a signal needs to be confirmed in some way. If you receive a buy signal from one indicator and a sell signal from the stock price, you need to use different indicators, or different time frames until your signals are confirmed.

Another thing to keep in mind is that you should never lose sight of your trading plan. Your rules
para el trading siempre deben aplicarse al utilizar indicadores.