Supertrend Indicator
A trend-following overlay indicator derived from Average True Range and a multiplier that plots a dynamic stop-and-reverse line on the price chart, widely used in Indian equity and F&O markets to identify directional bias.
The Supertrend indicator was developed by Olivier Seban and gained particular popularity in Indian trading communities, partly because of its simplicity and partly because its signals were straightforward to automate. The indicator used two inputs: the ATR period (commonly 7 or 10) and the multiplier (commonly 3.0). It computed an upper band and a lower band around price and switched from a bullish reading to a bearish one whenever the closing price crossed the active band.
When the indicator was in bullish mode, the band appeared below the price and was typically displayed in green; in bearish mode, the band appeared above the price and was displayed in red. Traders historically used the Supertrend as a dynamic trailing stop: a long position might be held while the indicator remained green, and exited when the price closed below the band and flipped the indicator to red.
In Indian markets, the Supertrend was applied across timeframes ranging from 5-minute intraday charts on Bank Nifty to weekly charts on Nifty 50 constituent stocks. Backtests on Nifty 50 daily data across multi-year periods showed that the indicator captured significant trend moves but also produced several false signals during sideways or oscillating market phases — a characteristic common to all trend-following tools.
Combinations of Supertrend with RSI or volume confirmation were historically used by systematic traders in India to filter false signals. A Supertrend bullish flip accompanied by RSI moving above 50 from below, with above-average volume, historically had a higher follow-through rate than a Supertrend flip in isolation.
Brokers and trading platforms in India popularised Supertrend-based algo strategies for retail participants from approximately 2018 onward, making it one of the most discussed technical indicators in domestic trading forums and social media communities. This widespread use made it a self-referential indicator in some liquid stocks — many participants watching the same signals created predictable short-term behaviour around Supertrend flips.