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Supertrend Indicator

OVERVIEW

The Supertrend indicator is a price overlay that displays one continuous line — green and below price during uptrends, red and above price during downtrends. The line is constructed from the midpoint of each bar's high-low range, offset by a multiple of the Average True Range (ATR). It is binary by design: at any moment, the market is either in "trend up" or "trend down" mode, with no intermediate state. Developed by Olivier Seban and popularized by Indian trading communities, Supertrend has become one of the most-used trend filters on TradingView alongside the moving average.

Note

The default configuration — ATR period 10, multiplier 3.0 — is calibrated for daily charts on liquid US equities. Applying these defaults to shorter timeframes or higher-volatility instruments without adjustment produces unreliable signals.

HOW IT WORKS

Inputs

Parameter Default Effect of Increasing
ATR Lookback Period 10 Smoother ATR, slower reaction to volatility shifts
Multiplier 3.0 Wider bands, fewer flips, more trend given back on reversal

Calculation Steps

Step 1 — Compute basic bands

Basic Upper Band = (High + Low) / 2 + Multiplier × ATR
Basic Lower Band = (High + Low) / 2 − Multiplier × ATR

Step 2 — Apply trailing logic to produce final bands

Final Upper Band = min(Basic Upper, previous Final Upper)
                  if previous close ≤ previous Final Upper,
                  else Basic Upper

Final Lower Band = max(Basic Lower, previous Final Lower)
                  if previous close ≥ previous Final Lower,
                  else Basic Lower

Step 3 — Determine the Supertrend value

  • If the previous Supertrend was the Upper Band and current close ≤ current Upper Band → Supertrend = Upper Band (downtrend continues)
  • If the previous Supertrend was the Upper Band and current close > current Upper Band → Supertrend = Lower Band (flip to uptrend)
  • Symmetric rules apply for flipping from Lower Band back to Upper Band

Note

The trailing logic ensures the line moves only in the direction of the trend — it ratchets up in uptrends and down in downtrends, never giving back ground until a flip.

Worked Example

SPY closes at $580 with ATR(10) = $5.20 and the default multiplier of 3.

Calculation Value
Bar midpoint: ($582 + $578) / 2 $580.00
Basic Lower Band: $580 − (3 × $5.20) $564.40
Supertrend (prior trend up) $564.40 — green

If SPY closes the next session at $577 and the Lower Band ratchets to $565.10, Supertrend continues printing green at $565.10. The trend flips only when SPY closes below the Lower Band, at which point the Upper Band is immediately recalculated, printed in red overhead, and the system declares a downtrend.

HOW TO USE

Common Applications

Use Case Description
Trend confirmation filter Take long trades only when Supertrend is green; short trades only when red
Trailing stop Exit a position when price closes through the Supertrend line
Multi-timeframe alignment Require Supertrend green on the daily, 4-hour, and 1-hour charts simultaneously before entry
Algorithmic signal filter Combine with RSI or MACD to suppress signals during choppy, range-bound conditions

Multiplier Selection by Context

Multiplier Range Behavior Typical Use Case
1.5 – 2.0 Tighter trail, more whipsaws Faster momentum strategies
3.0 (default) Balanced for daily US equity charts Swing trading on liquid instruments
4.0 – 5.0 Wider trail, fewer flips, more given back on reversals Position trading, reducing noise

Tip

When applying Supertrend to intraday or crypto charts, raise the multiplier significantly above the default. A standard ATR(10), 3.0 configuration applied to a 5-minute crypto chart can produce 80–100 flips per session, rendering the signal unusable.

LIMITATIONS

Note

Supertrend is a lagging indicator by construction. It cannot signal a reversal until price has already moved through several ATRs of the prior trend's range.

Whipsaw risk in ranging markets

A standard configuration produces 15–25 flips per year on a major index under trending conditions. During a multi-week consolidation, the same configuration can generate 4–5 flips within two weeks. Cumulative slippage across those flips frequently exceeds the gain captured when a genuine trend eventually develops.

Timeframe and instrument dependency

The default parameters are not universally applicable. Always validate multiplier and ATR period settings against the specific instrument and timeframe before use.