Bollinger Bands, EMA 21

Learn a unique Bollinger Bands and EMA 21 strategy to identify market phases (consolidation, trend) across Forex, Crypto, and Indices on 1H charts.

Published · Updated · Methodology: Technical Indicators

Part of: EMA Strategies

  • Methodology: Technical Indicators
  • Content type: educational
  • Timeframes: 1 hour (H1), 5 minutes (for comparison, but advised against for beginners)
  • Markets: Indices, Forex (GBPUSD, EURUSD), Cryptocurrencies (Bitcoin)

Indicators used

  • Bollinger Bands
  • EMA
  • SMA

Source video

Decoded from: 3 Trucos con Bandas de Bollinger para Operar Mercados con Tendencia by Komtu Trading — watch the original

Key timestamps:

  • 0:00 - Introduction to Bollinger Bands
  • 2:00 - Custom Bollinger Bands configuration (EMA 21)
  • 4:00 - Explanation of EMA 21 vs SMA 21
  • 6:00 - Identifying market phases with Bollinger Bands
  • 10:00 - Importance of timeframes (H1)
  • 12:00 - Example of trading with flat Bollinger Bands

Strategy overview

Bollinger Bands are a volatility envelope drawn a fixed distance around a moving-average centerline — and it is that centerline, not the envelope, that this video is really about. Komtu Trading opens by rebuilding the indicator's default configuration so the basis is an exponential 21-period average rather than the simple one most platforms ship with, then gives a full segment to what actually changes when you make that swap. The EMA here is not an extra line on the chart and not a signal in its own right; it is the spine the bands are measured from, so altering it alters every reading the indicator produces.

From there the video's use of the tool is diagnostic rather than directional. The middle sections go to identifying market phases from the way the bands behave, and to a timeframe argument: the hourly chart is presented as the working frame, with a 5-minute view shown only for contrast and explicitly discouraged for beginners. There is a tension worth noting in the framing — the title promises three tricks for trading trending markets, yet the closing example is built around flat bands, the condition in which the trend the title advertises is precisely what is missing.

This entry decodes a Spanish-language walkthrough, and no discrete rule set was extracted from it — there is no entry, exit or risk logic to break down here, because the source is a configuration-and-reading tutorial rather than a mechanical system. What it offers is a reasoning chain: why the basis matters, how band behavior separates one market phase from another, and which timeframe to do that reading on. Whatever gets built on top of that is yours to define and test.

Topics

bollinger bands strategy · ema strategy · technical indicators · forex strategy · crypto trading strategy · indices trading · 1 hour strategy · swing trading · trading strategy · pine script · tradingview strategy · gbpusd strategy · eurusd strategy · bitcoin trading strategy · market phases

Frequently asked questions

Why use an EMA instead of an SMA as the Bollinger Bands basis?

The basis is the moving average the bands are calculated around, so changing its type changes the entire envelope, not just the middle line. An exponential average weights recent prices more heavily, so the centerline — and with it both outer bands — responds faster to new information than a simple average does. The source video devotes a segment to comparing the two side by side.

What timeframe does this video use for Bollinger Bands?

The hourly chart is presented as the working timeframe. A 5-minute chart appears only for comparison, and the video explicitly advises beginners against trading it.

What do flat Bollinger Bands indicate?

Horizontal, non-expanding bands describe a market whose direction and volatility have both compressed — a range rather than a trend. The video closes on an example of exactly this condition, which is the opposite of the trending environment its title targets; telling the two apart is the purpose of its market-phase section.

Is this a complete trading strategy?

No. No entry, exit or risk rules were extracted from this video — it teaches how to configure the indicator and how to read what it is showing, not a mechanical system. Strategy Decoder catalogs sources like this one so you can see what a video actually contains before spending time on it.

About this strategy page

This trading strategy was decoded by Strategy Decoder's AI from a public YouTube trading video and turned into a structured, reviewable specification. In the interactive app this page shows the full entry and exit logic, risk management settings, the indicators involved with their parameters, AlgoWizard-compatible logic and a Pine Script export ready for TradingView backtesting — plus an automated backtest verdict when one has been computed for this strategy.

Strategy Decoder catalogs 2,229 decoded strategies. Each one is extracted with confidence scoring, cross-linked to the indicators it uses, and kept up to date as new videos are processed daily. Load this page with JavaScript enabled to use the interactive tools, or start from the strategy explorer to filter by methodology, market and timeframe.

Other versions of this strategy

More decoded strategies