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Technical Indicators Explained
Technical indicators are calculations applied to a security’s price and volume to reveal trend, momentum, and volatility that are difficult to read from raw price alone. Traders use them to confirm direction, time entries and exits, and gauge whether a move is overextended. The most widely used indicators fall into a few families: momentum oscillators like RSI and the stochastic oscillator, trend tools like moving averages and MACD, volatility measures like Bollinger Bands, and price-structure tools like Fibonacci retracement.
No single indicator works in isolation, and none predicts the future. Each one is derived from past data and describes what has already happened, so the skill is in reading them together and in the right context. A practical setup combines one trend indicator with one momentum indicator, then uses volatility and structure to refine the entry. The guides below explain each indicator on its own terms, with illustrative charts, so you can decide which ones fit how you trade.
What does RSI tell you?
The Relative Strength Index measures the speed of recent price changes on a 0 to 100 scale. Readings above 70 are often called overbought and below 30 oversold, but in a strong trend RSI can stay stretched for a long time, so it works best as context rather than a standalone signal.
What is the difference between MACD and RSI?
MACD is a trend-following indicator built from two moving averages, so it reads the direction and strength of a move. RSI is a momentum oscillator that gauges whether a move is overextended. Many traders pair them, using MACD for direction and RSI for timing.
What do Bollinger Bands measure?
Bollinger Bands plot a moving average with an upper and lower band set a number of standard deviations away, so they expand and contract with volatility. A narrow squeeze signals low volatility that often precedes a larger move, while repeated touches of a band show where price is stretched relative to its recent range.
How many indicators should you use at once?
A practical setup combines one trend indicator with one momentum indicator, then uses a volatility or structure tool to refine the entry. Stacking several indicators that measure the same thing adds noise, not confirmation, and can give a false sense of certainty.
Guides in this series
RSI Explained
The Relative Strength Index measures momentum on a 0–100 scale, flagging overbought and oversold conditions.
Read the guide →MACD Explained
How the moving average convergence divergence reads trend strength and momentum shifts through crossovers.
Read the guide →MACD vs RSI
When to reach for a momentum oscillator versus a trend indicator, and how the two work together.
Read the guide →Bollinger Bands Explained
How volatility bands wrap price, what a squeeze signals, and how to read band touches in context.
Read the guide →Moving Averages Explained
SMA versus EMA, common periods, and how moving averages define trend, support, and resistance.
Read the guide →Stochastic Oscillator
How the %K and %D lines gauge momentum and where overbought and oversold readings can mislead.
Read the guide →Fibonacci Retracement
How to draw retracement levels and use the 38.2%, 50%, and 61.8% zones to map potential pullbacks.
Read the guide →Frequently asked questions
What are technical indicators?
Technical indicators are math-based calculations applied to a stock’s price and volume to reveal trend, momentum, and volatility that are hard to see on raw price alone. Common examples include RSI, MACD, moving averages, and Bollinger Bands.
Which technical indicator is best for beginners?
Moving averages and RSI are the most beginner-friendly because they are easy to read and widely used. Moving averages show trend direction, while RSI flags potential overbought and oversold conditions on a simple 0–100 scale.
Should I use more than one indicator?
Combining a trend indicator (like a moving average or MACD) with a momentum indicator (like RSI or the stochastic oscillator) reduces false signals. Stacking too many indicators that measure the same thing adds noise, not confirmation.
Do technical indicators predict price?
No. Indicators are derived from past price and describe what has already happened. They help frame probabilities and context, but no indicator predicts the future. Always pair them with risk management.
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