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Technical Indicators
Technical indicators are mathematical calculations applied to a market's price and volume history and plotted on or under the chart. Each one compresses raw price action into a single readable measure, so you can see trend, momentum, volatility, or participation at a glance instead of inferring it from a wall of candles. They fall into four families, and knowing which family an indicator belongs to is more useful than memorising its formula.
The families are trend (which way and how strongly), momentum (accelerating or fading), volatility (how big the moves are), and volume (how much participation is behind them). Every indicator below is derived from data that already exists, which means none of them predicts anything. They describe. What you do with the description is where the edge, or the loss, comes from.
If you are still learning to read the underlying price action, start with the chart reading curriculum and add indicators afterwards. Indicators are a confirming layer, not a substitute for reading the chart.
Trend indicators
Which way is price going, and how strongly?
Trend indicators smooth price to reveal direction and the strength behind it. They are lagging by construction: they average what has already happened, which is exactly why they filter noise. They work well in a directional market and produce repeated false signals in a range.
Where it breaks: A moving average crossover in a sideways market will whipsaw you. Check whether a trend exists at all before trading a trend tool.
Moving averages (SMA and EMA)
The base layer: an average of the last N closes, plotted over price. Direction of the line is the trend, and the line itself often acts as dynamic support or resistance.
Read the guide →SMA vs EMA
A simple average weights every period equally, an exponential one weights recent prices more. EMA turns faster and gives more false turns.
Read the guide →MACD
The difference between two EMAs, plotted with a signal line and a histogram. Reads trend direction and the rate at which momentum is building or fading.
Read the guide →MACD settings
Why 12, 26 and 9 became the default, and what changing them actually does to signal frequency.
Read the guide →ADX (Average Directional Index)
Measures trend strength without saying which direction. A low ADX is the warning that your trend tools are about to misfire.
Read the guide →Supertrend
An ATR-based band that flips side when price closes through it, giving a mechanical trend state and a trailing stop reference.
Read the guide →Ichimoku Cloud
A full system in one overlay: trend, support and resistance, and momentum, read from the position of price relative to the cloud.
Read the guide →Parabolic SAR
Dots that trail price and flip on a reversal. Simple trailing-stop logic that struggles badly in chop.
Read the guide →Moving average crossover strategy
The golden cross and death cross explained, with what the crossover does and does not tell you.
Read the guide →Momentum indicators
Is the move accelerating or running out of fuel?
Momentum oscillators measure the speed of recent price change, usually on a bounded scale, so you can see whether a move is stretched relative to its own recent behaviour. They are best used for timing inside a trend you have already identified, and for spotting divergence between price and the pace behind it.
Where it breaks: Overbought does not mean sell and oversold does not mean buy. In a strong trend an oscillator can stay pinned at an extreme for weeks while price keeps going.
RSI (Relative Strength Index)
The most searched indicator there is. A 0 to 100 scale of the ratio of recent gains to recent losses, with 70 and 30 as the conventional thresholds.
Read the guide →RSI settings
What changing the 14 period lookback does, and why shorter settings suit shorter timeframes at the cost of more noise.
Read the guide →MACD vs RSI
Which one answers which question, and why pairing a trend tool with a momentum tool beats stacking two of the same kind.
Read the guide →Stochastic oscillator
Where the close sits inside the recent high-low range, plotted as %K and %D. Faster and noisier than RSI.
Read the guide →CCI (Commodity Channel Index)
How far price has moved from its statistical mean, unbounded, so it reads both extremes and trend strength.
Read the guide →Williams %R
A close cousin of the stochastic on an inverted scale, popular for spotting short-term exhaustion.
Read the guide →Awesome Oscillator
The gap between a 5 and a 34 period median-price average, shown as a histogram of momentum shifts.
Read the guide →Rate of Change (ROC)
The purest momentum reading: percentage change over N periods, with zero as the dividing line.
Read the guide →Volatility indicators
How much is this thing moving, and is that normal for it?
Volatility indicators describe the size of the moves rather than their direction. They answer the practical questions: how wide a stop needs to be to survive normal noise, whether a market is compressed or expanded, and how much a position should be sized down when conditions get wild.
Where it breaks: Volatility tools are direction-agnostic. A Bollinger Band squeeze says a bigger move is likely, not which way it will break.
Bollinger Bands
A moving average with bands set a number of standard deviations away, so they widen and narrow with volatility itself.
Read the guide →Bollinger Band squeeze
What a period of unusually narrow bands means, and why the direction of the eventual expansion is a separate question.
Read the guide →ATR (Average True Range)
Average size of a period range in price terms. The standard input for stop distance and volatility-scaled position sizing.
Read the guide →Donchian Channels
The highest high and lowest low over N periods. The original breakout definition, and still the cleanest one.
Read the guide →Volume indicators
How many people are actually behind this move?
Volume indicators add participation to the picture. Price tells you what happened, volume tells you how much conviction was behind it. A breakout on thin volume and the same breakout on triple the average are two different events, and only the volume panel distinguishes them.
Where it breaks: Volume data is venue-specific. In forex there is no consolidated tape at all, so what your platform shows is your broker or exchange feed, not the whole market.
VWAP (Volume-Weighted Average Price)
The session average price weighted by volume traded at each level. Used as an intraday fair-value reference by institutional desks.
Read the guide →OBV (On-Balance Volume)
A running total that adds volume on up periods and subtracts it on down ones, so accumulation and distribution show as a trend line.
Read the guide →Volume trading explained
How to read the raw volume bars: confirmation, exhaustion, and the divergences worth caring about.
Read the guide →How to combine technical indicators
The rule that saves most charts is one indicator per family, at most three in total. A trend tool tells you which direction is worth trading, a momentum tool tells you when inside that direction, and a volatility or volume tool tells you how much to risk and whether anyone is behind the move. Three indicators from three families give you three genuinely different pieces of information.
Adding a fourth and fifth oscillator does the opposite. RSI, the stochastic and Williams %R are near-identical measurements, so when all three agree you have learned one thing three times and it feels like confirmation. That is where over-fitted setups come from: enough indicators will always eventually agree, and waiting for them costs you the entry.
Settings deserve the same restraint. Defaults such as RSI 14 or MACD 12/26/9 are not magic, but tuning them until last year's chart looks perfect is curve fitting, and it does not survive contact with new data. Change a setting because the timeframe genuinely demands it, not because the backtest improved.
How an AI chart reader uses indicators on a screenshot
When you upload a chart screenshot to Bullynx, the model reads what is visibly rendered in the image: the candles, the overlays you have drawn, and any indicator panels you left switched on. If RSI is on the chart it can read the level and the shape; if it is not, the model has no access to the underlying data and cannot compute it. So what you include in the screenshot decides what the analysis can talk about. It then describes the structure and levels, and says what would invalidate the read.
The honest limits: values are read off pixels, so a number sitting between gridlines is an approximation, a cluttered chart with six overlays reads worse than a clean one, and the model cannot see anything outside the visible window, including the higher timeframe that would change the interpretation. It is a reading assistant, not a data feed, and it is educational only.
Get ProFrequently asked questions
What are technical indicators?
Technical indicators are mathematical calculations applied to a market price and volume history, plotted alongside or under the chart. They compress raw price action into a single readable measure of trend, momentum, volatility, or participation. Common examples are moving averages, RSI, MACD, Bollinger Bands and VWAP.
What are the four types of technical indicators?
Most indicators fall into one of four families: trend indicators such as moving averages and MACD, momentum oscillators such as RSI and the stochastic, volatility measures such as Bollinger Bands and ATR, and volume tools such as VWAP and OBV. Each family answers a different question, which is why a useful chart takes one from a couple of families rather than several from one.
Which technical indicator is the most accurate?
None of them is accurate in the sense of being predictive. Every indicator is a transformation of past price, so it describes what has already happened. Accuracy comes from the context you apply it in: the same RSI reading means different things in a strong trend and in a range.
Which technical indicators are best for beginners?
A moving average and RSI are the usual starting pair. A moving average shows direction in one glance and RSI puts a number on whether the move is stretched. Adding volume as a third layer is enough for most beginners, and it is more useful than adding a fourth oscillator.
How many indicators should you use at once?
Two or three, drawn from different families. Stacking RSI, the stochastic and Williams %R together feels like confirmation but is really the same measurement three times, which produces false confidence rather than a better read.
Do technical indicators work?
They work as descriptions, not as predictions. An indicator can tell you a trend is intact, that volatility has compressed, or that volume did not confirm a breakout, and those are genuinely useful inputs to a decision. What no indicator does is tell you what happens next, so risk management still has to do the heavy lifting.
Keep going
- All technical indicator guides: every post in this cluster, newest first.
- Chart reading curriculum: the price action indicators sit on top of.
- Trading glossary: one-line definitions for the terms used above.
- Risk/reward calculator: the part no indicator does for you.
Educational only. Not financial advice. Read our risk disclosure.