Supertrend

Supertrend places a trailing stop line a multiple of Average True Range (here 3× the 10-day ATR) below price in uptrends and above it in downtrends, flipping sides when price crosses it. Green segments mark uptrend support; red segments mark downtrend resistance.

Because ATR widens with volatility, the stop gives more room in wild markets and tightens in calm ones. It shines as a trend-following exit discipline; it chops badly in sideways markets, like every trend indicator. Series starts in 2017, when true daily high/low data begins.