How Supertrend Works — The Best Trend-Following Indicator

Supertrend is a trend-following indicator that draws a single line on the price chart — either below price in a bull market or above price in a bear market. It flips sides when the trend reverses, giving you a clear visual signal that's easy to read at a glance.

Unlike moving averages that just smooth price, Supertrend accounts for market volatility using the Average True Range (ATR). This makes the line dynamic — it widens in choppy conditions and tightens in smooth trends.

The two inputs you need to know

ATR Period (default: 10)

ATR measures how much a market moves on average over N candles. A period of 10 means it looks at the last 10 candles to calculate average volatility. Shorter periods react faster but produce more noise. Longer periods are smoother but slower to react.

Multiplier (default: 3.0)

This determines how far the Supertrend line sits from price. A multiplier of 3.0 means the line is placed 3× ATR away from the midpoint. Higher multiplier = more room before a flip = fewer false signals but slower reactions.

How the line is calculated

The key rule: once the line flips to bullish, it can only move up (it never comes back down until a flip). This prevents the line from jumping around and creates clean, sustained trend signals.

How to read the signal

Supertrend in Strategester

Strategester's Supertrend ATR strategy runs this calculation live on every candle. On the dashboard you'll see:

• The Supertrend line plotted directly on the candlestick chart in green (bull) or red (bear)
• A live BULL / BEAR state badge
• The exact ATR value and Supertrend level in the sidebar
• A flip history showing when the last trend change occurred

Supertrend vs Moving Average — what's the difference?

A simple moving average just averages price over N periods — it doesn't adapt to volatility. In a high-volatility market, an MA will whipsaw frequently. Supertrend uses ATR to widen its band during volatile periods, filtering out noise that would generate false MA crossovers.

Best settings for crypto

The default 10 period, 3.0 multiplier is the most widely used setting and works well on 5-minute charts for Bitcoin and Ethereum. For more volatile altcoins (DOGE, SHIB, smaller caps), consider increasing the multiplier to 3.5 or 4.0 to reduce false flips.