SuperTrend: ATR bands, state changes and whipsaw risk
SuperTrend combines volatility-scaled bands with a directional state.
Before this lesson
These lessons provide background; you can still read this page now.
What the indicator measures
SuperTrend combines volatility-scaled bands with a directional state. It draws a selected trailing band rather than both raw bands at all times. Its color records the algorithm’s current state. It does not certify that a trend will continue or place a protective order on a trading account.
Calculation and units
Basic bands are HL2 ± multiplier × ATR, where HL2 = (high+low)/2. Final bands carry prior values forward under conditional update rules. The previous directional state and a close crossing the relevant final band determine whether the state changes. A raw band alone is not the complete indicator.
Worked educational example
If HL2 is 100, ATR is 2 and multiplier is 3, basic bands are 106 and 94. The displayed reference can still differ because the final bands depend on the previous bar. To reproduce a specific plotted point, retain the preceding bands, close and direction as well as today’s high and low.
Reading it without overclaiming
Wider multipliers usually create more distant basic bands, while shorter volatility windows react differently to recent changes. Neither setting guarantees fewer losses. In a sideways series, repeated state flips can alternate direction without a durable move. A live candle’s state can change again before close.
How TradingHub implements it
TradingHub uses period 10 and multiplier 3 by default, with the native Wilder-style ATR routine. The first valid state compares close with the middle of its initialized bands; later states use their recursive conditions. Calculations restart on the supplied visible slice, so history and initialization matter.
Comparisons that matter
ATR supplies magnitude, while SuperTrend adds state and band-update rules. Keltner Channels display an envelope without the same switching mechanism. A SAR dot and a SuperTrend line can agree because both lag the same move, not because they independently prove a future path.
A reproducible chart review
Open the existing Trading chart and choose the same market, interval and closed observation time as your comparison. Record every calculation parameter before changing one at a time. Match source fields, history length and the bar window. Native indicators calculate from the supplied visible slice; Indicator Studio calculates from its available chart snapshot. A difference after panning may therefore be a window or warmup effect rather than a new market event.
Limits and next lesson
The illustration uses constructed candles, not a dated market observation or a backtest. A live candle can change until it closes. Missing history, volume units and implementation conventions limit comparisons. No indicator guarantees a direction, an execution price or protection from loss. Use the related lessons to separate definitions, observed values and possible explanations; a correct quiz records learning progress, not trading competence.
Knowledge check
Can raw HL2 ± ATR bands alone reproduce the full SuperTrend state?
- No; prior final bands and direction are also required
- Yes; previous bars never matter
- Yes; the latest close is irrelevant
Show explanation
SuperTrend is recursive: its state and final bands carry information from previous observations.
Interactive checking needs JavaScript; the lesson and explanation remain readable.
Primary sources and scope
Educational scenarios are not execution guarantees, forecasts or personal recommendations. Check current product rules at their source.
Content revised: . Editorial responsibility: TradingHub. No independent professional certification is claimed.