Trading glossary
A technical indicator is a calculation based on price or volume used to study market behavior. Learn how indicators work, common types, and their limits.
A technical indicator is a formula applied to market data such as price or volume, producing values that are usually plotted on a chart. Indicators help traders describe conditions like momentum, trend, or volatility in a consistent way. They are descriptive tools built from past data, not predictions, and they do not tell you what a market will do next.
Indicators are often grouped by what they measure. Trend indicators such as moving averages smooth price over time. Momentum indicators such as RSI and MACD gauge the speed of price changes. Volatility and volume indicators describe how much and how actively a market is moving. Many traders combine several types rather than relying on a single reading.
Because indicators are derived from historical prices, they can lag or give conflicting readings, and no indicator is correct on its own. Traders typically use them for context alongside price action and risk management, not as standalone instructions. Indicator readings are informational and not personalized advice, and any market decision carries the risk of loss of capital.
No. Indicators summarize past and current market data. They can describe conditions like momentum or trend, but they do not predict future prices and can produce false or conflicting signals.
There is no fixed number. Some traders use one or two for clarity, while others combine several categories. Adding more indicators does not improve reliability and can create conflicting readings.