Concept
Fibonacci Bollinger Bands
Fibonacci Bollinger Bands are Volatility concepts. The Library holds 3 implementations, each one a working definition you can pull into Quant.
Top Fibonacci Bollinger Bands indicators
3 total
What are Fibonacci Bollinger Bands?
Fibonacci Bollinger Bands graft the Fibonacci ratio ladder onto a volatility envelope. The construction starts like standard Bollinger Bands: a moving-average basis (implementations vary; a longer VWMA is common) with an outer band a fixed number of standard deviations away, often three. Interior bands are then drawn at Fibonacci ratios of that outer distance, typically 0.236, 0.382, 0.5, 0.618, and 0.764 above and below the basis, producing a symmetric ladder of levels that widens and narrows with volatility.
The result is a graded map rather than a binary envelope. Standard bands only say whether price is inside or outside; the fib ladder marks intermediate rungs where pullbacks and rallies can stall, in the same spirit as a static fib retracement but anchored to a moving basis and scaled by current volatility. The usual cautions apply twice over: neither volatility bands nor Fibonacci ratios obligate price to react, so the rungs are candidate levels to plan around, not promises.
How traders use it
- As dynamic support and resistance: in a trend, traders watch pullbacks into the interior rungs for stall-and-continue behavior, treating a hold above a rung as evidence the trend is healthy.
- As a stretch gauge: a push into the outermost band flags an extended move the same way a standard band tag does, a fade candidate in ranging tape and a strength signal in trending tape.
- As a regime read: price holding the upper half of the ladder keeps a bullish bias, the lower half a bearish one, and oscillation around the basis marks balance.
- As a confluence ingredient: rungs that line up with swing-anchored retracements, prior highs and lows, or round numbers carry more weight in confluence scoring than either level type alone.
Fibonacci Bollinger Bands vs. other envelopes
Bollinger Bands: The parent tool plots one envelope at a fixed deviation multiple and is read inside-or-outside. Fibonacci Bollinger Bands subdivide the same span into a ratio ladder, trading that binary read for graded intermediate levels.
Keltner Channels: Keltner Channels scale their envelope by ATR around an EMA, producing a smoother band that responds to true range rather than close-to-close dispersion. The Fibonacci variant stays standard-deviation based and adds interior ratio lines.
Envelope: A plain envelope offsets the basis by a fixed percentage, so its width never adapts to conditions. Both Bollinger variants breathe with volatility; the Fibonacci version simply marks graduated rungs along the way.
Related concepts · Band & channel systems
Concept family
Volatility
56 concepts mapped · 43 in the Library
Fibonacci Bollinger Bands FAQ
What settings do Fibonacci Bollinger Bands use?
There is no single standard. Widely shared versions use a long basis, commonly a 200-period volume-weighted moving average, with the outer band around three standard deviations and interior lines at the 0.236, 0.382, 0.5, 0.618, and 0.764 ratios. Others keep a classic 20-period basis. Check the implementation and match the basis length to your holding period.
Do markets actually respect the Fibonacci ratios inside the bands?
Treat them as reference levels, not physics. No mechanism forces price to turn at 0.618 of a band span; the practical value is that the rungs are volatility-scaled, consistently placed, and watched by other traders. Reactions happen often enough to plan around and fail often enough to require confirmation before acting.
Are Fibonacci Bollinger Bands better for trend trading or mean reversion?
Both uses exist. Trend traders buy pullbacks that hold interior rungs in the direction of the basis slope; reversion traders fade tags of the outermost bands when the basis is flat. The ladder itself is neutral, so most methods first classify the regime and then decide which read applies.
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