Supertrend explained

Trend

What Supertrend measures

Supertrend is a trend-following indicator built on ATR (Average True Range) that plots a single line above or below price to indicate trend direction. When price is above the Supertrend line, it's green (uptrend); when below, it's red (downtrend). It produces rule-based directional readings from volatility-adjusted levels.

How Supertrend readings are interpreted

The Supertrend line acts as a dynamic support (in uptrend) or resistance (in downtrend). A flip from red to green signals a potential buy; from green to red signals a sell. The default settings (10 period, 3.0 multiplier) work well for daily charts. Higher multiplier = more conservative signals, fewer flips, suitable for position trading.

Conventional Supertrend levels

Price crosses above Supertrend (line turns green): the trend reading flips bullish
Price crosses below Supertrend (line turns red): the trend reading flips bearish
Price consistently respecting the line as support/resistance: trend strength confirmation
Multiple flips in a short period: characteristic of a choppy market, where the indicator is considered unreliable
ATR multiplier 1.5–2.0: more sensitive, more signals; 3.0–4.0: conservative

Where Supertrend works, and where it does not

Excellent in strongly trending markets. In ranging or volatile/choppy markets it flips frequently, generating many false signals. ADX above 20 is the conventional confirmation for a Supertrend signal. Works particularly well on daily charts for swing trading.

Indicators commonly read alongside Supertrend

ADX: Supertrend flip + ADX > 25 = high-conviction trend signal
RSI: Use RSI to time entries near Supertrend in pullback scenarios
Volume: Volume surge on Supertrend flip = confirmed breakout

Known limitations of Supertrend

In high-volatility periods (earnings, FOMC), Supertrend flips often and unreliably
Lower timeframes (15-min, 1H) produce much lower win rates than daily
Two consecutive opposite signals = choppy market warning — stay flat

Supertrend in practice

Use the daily Supertrend for direction bias, then use RSI on 4H for precise entry
For crypto: increase multiplier to 4.0–5.0 to account for higher volatility
Track the flip price: if price closes back to where it flipped, it's a false signal
Trail stops using the Supertrend line value as stop level in trending trades

Other trend indicators

Ichimoku Cloud
Aroon Indicator
Vortex Indicator
Choppiness Index

Testing ideas built on Supertrend

A reading of Supertrend can be written as an exact rule and checked against historical data — as a full strategy with entries, exits and costs, or as a single condition and what followed it:

How to backtest a trading strategy without code
Event analysis: what follows a market event

Plot it yourself. Add this indicator to a chart, change every parameter and watch the line move, then backtest how the rule would have behaved on historical data — free on the S&P 500 ETF, no card.

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This is reference material, not advice. It describes what each indicator measures and how its readings are conventionally interpreted. Nothing here is a recommendation to buy or sell anything, and no indicator predicts future prices. GU Analyser is an analytical tool — no money is ever traded here.