Ch 6 · Indicator
Trend Lagging

Supertrend

ATR-based trailing bands that flip colour with the trend. Green line below price = uptrend; red line above price = downtrend.

Formula

Upper band = (High + Low)/2 + (mult × ATR)
Lower band = (High + Low)/2 − (mult × ATR)
Trend flips when close crosses the active band

What it's for

Mechanical trend follow: long on flip up, short (or exit) on flip down. Common in intraday systems.

When it fails

Choppy sessions produce whipsaw flips. In strong persistent trends the flip may not come for weeks.

On the chart

Nifty 50 daily bars with Supertrend pre-loaded:

Where it's used on this site

3 strategies use Supertrend: