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Bollinger Bands (BBANDS)

StratCraft indicator page for Bollinger Bands.

Route: /indicators/bbands/

What It Does

Bollinger Bands create a dynamic price envelope around a moving average. They are widely used for breakouts, fades, and volatility expansion detection.

Formula

Middle Band = SMA(n)

Upper Band = SMA + (k * StdDev)

Lower Band = SMA - (k * StdDev)

Parameters

  • period - default 20
  • devfactor - default 2
  • movav - default MovingAverageSimple

C++23 API

#include <nonabt/indicators/bbands.hpp>
auto bbands = std::make_unique<nonabt::BBANDS>(data().close(), 20, 2, "MovingAverageSimple");

Common Usage

  • Use BBANDS for mean-reversion setups.
  • Use band breaks for trend continuation.
  • Use band width for volatility analysis.

Practical Pattern

Trade a break above the upper band as momentum expansion or a return from the lower band as oversold mean reversion, depending on the broader regime.

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