Upper breaks live—closes above the upper band
Intraday volatility executionMarket data live
Bollinger Band Breakout Screener
Detect close-confirmed Bollinger band breakouts, riding band walks and pre-breakout squeeze coils with a strict later-candle trigger.
Market snapshotAwaiting market data
Lower breaks live—closes below the lower band
Squeeze coils—bandwidth in bottom percentile
Trend aligned—0 symbols scanned
Volatility TapeEvery live band break, walk and squeeze coil on the tape.
BB(20, 2)SMA basis · population σ · close-confirmed breaks
| Setup | Price & band | Indicators | Levels | Tools | |||||||||||
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Earlier breakouts
Replay one session with the selected timeframe, segment and breakout settings.
Reached level 1 means price covered one setup-range from the trigger before the invalid level or a close back inside the band. The trigger is a later break of the setup high/low; gaps fill at the open. If a candle could reach both levels, the invalid level is assumed first. Each event is independent; fees and slippage are excluded.
All times are IST candle starts. “Known at” is when the breakout candle closed. Trigger and exit times identify the candle, not the exact tick. Replay runs only when requested.
Choose a date and run replay to see earlier successes and failures.
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Signal anatomyThe exact sequence this screen enforces
Educational analytics · not investment adviceCompress
Bandwidth shrinks into its bottom percentile as volatility coils inside the bands.
Break the band
A candle closes outside the band with the selected minimum directional body. Volume contributes to quality.
Confirm with a later candle
The setup never confirms itself; a later candle must trade beyond its extreme.
Invalidate cleanly
Any close back inside the band ends the walk; the basis anchors the invalid level.
Screener methodology
What the Bollinger Band Breakout Screener is designed to find
This is a two-sided volatility-expansion screener for traders who require confirmation after price leaves its statistical envelope. Bands are built on an SMA basis with population deviation and the bandwidth percentile ranks compression against recent history. The engine separates the break event from the trigger event: a later candle must clear the breakout extreme, and any close back inside the band ends the structure. Squeeze coils surface before the break with the band edge armed as the trigger and the basis as the invalid level. RSI, MACD, EMA alignment and ADX/DMI are scored in the setup direction without replacing price and volume.
5m / 15m / 1h / 1d / 1wNSE Cash + F&O60s refreshColumnar feed
Signal definition
The engine treats a close outside the Bollinger band as the reference event: above the upper band for a long, below the lower band for a short. The move must also clear the selected directional body threshold.
Confirmation rule
The breakout candle cannot confirm itself. A long confirms only when a later candle trades above its high; a short confirms only when a later candle trades below its low. Armed means that edge remains unbroken.
Quality model
Quality combines breakout RVOL, body expansion, distance beyond the band, squeeze-primed compression, freshness, prior-day level confluence and side-aware RSI, MACD, EMA 9/21/50 and ADX/DMI alignment.
Risk framework
Long invalidation uses the higher of the breakout candle low and the band basis; short invalidation uses the lower of the candle high and the basis. Squeeze coils enter at the band edge with the basis as the invalid level. Stops are widened when needed to a minimum 0.1% risk; targets use that same risk at 1R and 2R.
How to read the tableExecution-focused meaning of the most important columns
Prioritize fresh, liquid breaks where price is close to the trigger, RVOL supports the expansion, trend factors agree, and the invalid level sits relative to the trigger.
Signal StateBreaking is a fresh close outside the band; Armed awaits continuation; Walk rides the band; Coil is pre-breakout.
Break TimeLater trigger candle start in IST; not an exact tick time. The setup time identifies the earlier band-break candle. Pending means its extreme is intact.
QualityA+/A ranks the strongest multi-factor alignment; it is not a return forecast.
Last PriceLatest completed candle close with its percentage change from the prior daily close shown below.
Band BasisThe SMA basis of the band — the mean price the whole structure revolves around.
%B LocationWhere price sits inside the band: 0 at the lower band, 100 at the upper, beyond when outside.
BandwidthBand width as a share of the basis with its rolling percentile — the squeeze dial.
RSI 14Wilder RSI momentum, scored in the correct directional zone for long or short continuation.
TrendComposite 0–100 alignment of RSI, MACD, EMA 9/21/50 and ADX/DMI.
To TriggerDirection-normalized distance to the monitored edge. Smaller positive values are nearer.
Setup RVOLBreakout-candle volume versus its trailing candle baseline.
Market noteA close outside the band is a volatility event, not a promise of direction. Walks fail when price closes back inside; failed breaks often mean-revert to the basis. Market regime, liquidity, spread and nearby structure still matter before every execution.
See the Bollinger Band breakout strategy guide for squeezes, %B, bandwidth and the difference between a band walk and a failed break.