Bollinger Bands + EMA 9

Script from: TradingViewSwingScalpingMean reversionVolatilityCandlestick

A 1-minute scalping method that utilizes Bollinger Bands and a 9-period EMA. Enter a long position when the price closes below the lower band, and the next candle closes bullish above it but under the 9 EMA. Set take profit at EMA. Enhanced script with fixed entry/exit rules, code refinements, added shorts, and improved position sizing.

Audit verdict

Not rankedUpdated Jul 28, 2026

No reliable edge found

Its average result can't be told apart from chance, so it stays out of our rankings. The script itself passed our repainting audit.

1,169backtests3 markets

33robust scoreranked median 52

0.27p-valueranked median 0.24

0/36pass quality gatebacktests >15 trades

Audit details

How we decide whether a strategy enters our rankings. Read the methodology →

✓

Repainting audit

8 of 8 checks passed.

✓

Script availability

Open-source, still published on TradingView.

Statistical edge

Average t-statistic 1.53 (p = 0.27), below the median of 1.98 (p = 0.24) for ranked strategies.

Quality gate

None of the 36 backtests with more than 15 trades passes our quality gate.

Robust score

33/100, below the median of 52 for ranked strategies.

How its evidence compares

The t-statistic measures how far the average result sits from zero relative to its noise. Below about 2, it is within what random entries produce.

1.53

avg. t-statistic

1.98

median, ranked strategies

Best 5 of 1,169 backtests

Shown for transparency.

Symbol	Timeframe	Net profit	Profit factor	Trades	Max drawdown
Alphabet Inc. NASDAQ:GOOG	1H	+1,172%	2.42	710	66%
ADAUSD Longs BITFINEX:ADAUSDLONGS	2H	+622%	2.12	15	91%
ADAUSD Longs BITFINEX:ADAUSDLONGS	2H	+562%	2.01	13	91%
CVS Health Corporation NYSE:CVS	1D	+553%	2.32	499	30%
Shopify Inc. NYSE:SHOP	1D	+417%	4.70	79	50%

⚠Selected after the fact: these are the best 5 of 1,169 runs, not what to expect from this strategy.

Is Bollinger Bands + EMA 9 profitable?

Not reliably, based on our tests. Across 1,169 backtests, 0 of 36 with more than 15 trades pass our quality gate. The best result is +1,172% on Alphabet Inc. (1H, 710 trades). On average, its results are statistically indistinguishable from chance (p = 0.27).

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