Trend & directionSuperTrend · ST
A volatility-based trend line built from ATR that flips above or below price to signal direction.
Works best in trending marketsEngine-computed on a fixed sample series
What SuperTrend is
SuperTrend is a trend-following overlay that plots a single line on the price chart which flips from below price to above it, telling you at a glance whether the market is in an uptrend or a downtrend. It is built from the Average True Range, so the line sits a volatility-scaled distance away from price rather than a fixed amount, which lets it adapt as conditions change. When the line is below price and typically coloured green, the trend is up and the line acts as a trailing support; when it is above price and coloured red, the trend is down and the line acts as trailing resistance. The flip from one side to the other is the indicator's entire signal — it is a stop-and-reverse system that is always either long or short. It answers one blunt question: which way is the trend, and where is my stop?
How it is calculated
First the Average True Range is computed over a lookback, commonly 10 periods, to measure current volatility. A basic upper band is formed as the midpoint of the current bar, the average of the high and low, plus a multiplier times ATR, and a basic lower band as that midpoint minus the multiplier times ATR, with the multiplier usually set to 3. These basic bands are then converted into final bands with a ratcheting rule: the final lower band can only move up or hold in an uptrend, never loosen downward, and the final upper band can only move down or hold in a downtrend. The SuperTrend line follows the relevant final band, and it flips sides when price closes through the active band — a close below the lower band in an uptrend switches the indicator to its upper band and a downtrend read, and vice versa. That ratchet is what makes it a genuine trailing stop.
Reading it, step by step
The read is deliberately binary. Line below price, coloured green: the trend is up, stay long, and the line marks the level where your trailing stop sits. Line above price, coloured red: the trend is down, stay short, with the line as resistance and stop. The moment price closes through the line and it jumps to the other side, the trend read has flipped, and that flip is both the exit for the old position and the entry for the new one. Because the line ratchets in the trend's favour, it steadily tightens behind a running move, locking in more of the gain as the trend matures. The distance between price and the line tells you how much room the trend currently has before a flip, which widens in volatile conditions and narrows as volatility falls. There is no ambiguity to interpret — the colour and side say everything.
Best timeframes and settings
SuperTrend works on any timeframe but behaves very differently depending on settings and market. The default ATR period of 10 with a multiplier of 3 is a reasonable all-purpose choice for swing trading on 4-hour and daily charts. Raising the multiplier — to 4 or beyond — pushes the line further from price, which cuts the whipsaws that plague choppy markets but gives back more profit before flipping and delays every signal. Lowering it toward 1.5 or 2 tightens the line for faster, more sensitive signals suited to trending intraday markets, at the cost of far more false flips. Shortening the ATR period makes the line react quicker to volatility changes; lengthening it steadies the read. The core trade-off never changes: a tighter setting catches turns sooner but whipsaws more, while a wider setting is calmer but slower and gives back more.
When and where to use it
SuperTrend is a trend-following tool and therefore lives or dies by whether the market is trending. In sustained directional moves — trending equities, index futures, commodities, major FX — it excels, keeping you on the right side of the move and trailing a sensible volatility-based stop the whole way. It is at its worst in rangebound, sideways markets, where price oscillates across the line and the indicator flips back and forth generating a string of losing whipsaw trades. So the single most important use decision is regime: deploy it when a trend is present and stand it down, or widen it sharply, when the market is ranging. It suits liquid instruments where ATR is a meaningful volatility measure, and it is popular for trailing stops even among traders who use other tools for entries.
Strategies that use it
The pure strategy is stop-and-reverse: go long on the flip to green and hold, trailing the stop along the SuperTrend line, then reverse to short on the flip to red, staying always in the market. A more selective trend-filter strategy uses SuperTrend only for direction and a separate tool for entries, taking long setups solely while the line is green and shorts solely while it is red, which avoids trading against the trend. A third, hybrid approach uses SuperTrend purely as a trailing stop on positions entered by another method, letting the ratcheting line lock in gains and define the exit while the entry logic comes from elsewhere. Raising the multiplier is the standard adjustment when whipsaws mount, and combining the flip with a higher-timeframe SuperTrend in agreement filters many false signals.
Combining it with other indicators
SuperTrend's blind spot is that it cannot tell whether a trend exists, so it pairs naturally with ADX, which rates trend strength — take SuperTrend flips only when ADX confirms a trending market and ignore them when ADX is low and a range is likely. A moving average or MACD can confirm the direction of the flip, adding a second vote before you commit. Because SuperTrend already embeds ATR, layering a momentum oscillator such as RSI adds an independent read on whether the move is stretched. Volume can validate a flip, since a trend change on expanding volume is more convincing than one on thin trade. Using SuperTrend on two timeframes at once — trading the lower-timeframe flip only in the direction of the higher-timeframe line — is one of the most effective filters. The goal throughout is to keep it out of ranges.
Where it fails
The dominant failure is the whipsaw in a ranging market: because it is always in a position and flips on every close through the line, a sideways market can hand it a rapid series of small losing trades that grind down capital. It is also a lagging tool by construction — the signal comes only on the close through the band, so it never catches the exact turn and always gives back the distance between price and the line at the flip. The ATR multiple must be tuned per instrument and timeframe, and a setting that works on one market whipsaws on another. In a sharp gap the flip can occur at a much worse price than the line suggested. The defences are to filter with a trend gauge, widen the multiplier in choppy conditions, and accept that SuperTrend is built to ride trends, not to trade ranges.
A worked example
Take a stock on the daily chart where ATR over 10 bars is 2.00 and the multiplier is 3, giving an offset of 6.00. The current bar's midpoint, the average of its high and low, is 100, so the basic lower band is 94.00. Price closes at 101, above the line, so SuperTrend is green and reads an uptrend with the trailing stop at 94. Over the next two weeks price advances to 110, and because the lower band ratchets up in the trend's favour it has climbed to 104, tightening the stop and locking in gains. Then a sharp down day drives price to close at 103, below the 104 line; SuperTrend flips to red, jumping above price to signal a downtrend. That flip closes the long near 103 for a solid gain from the 101 entry and, in a stop-and-reverse system, opens a new short with the line now trailing as resistance overhead.