A more popular example of the Golden Ratio in nature would be that of the Nautilus shell
and how it relates to a visual representation of the logarithmic spiral.
The Golden Ratio even plays its role in philosophy. Aristotle proposed that moral values
follow 2 extremes. One part excess and the other part deficiency, the desirable point would
be the Golden Mean between the two extremes. This philosophy was also expanded on by
St. Thomas Aquinas, a great catholic philosopher. (Kraut, R. 2001)
How does the Golden Ratio relate to Financial Markets?
Given the above, we can theorise that other interactions of man would follow that of a
fractal nature. The markets are filled with human wants and needs, mass psychology and
emotion, which creates and environment of chaos and non-linear phenomenon that we can
measure using fractal geometry, like a Fibonacci Retracement. (Williams, B [SA])
Fibonacci Ratios
So how do we calculate the points: 68.1%, 50%, 38.2%, and 23.6% and why are they more
important than say 165% or 40%? Going back to the Fibonacci sequence (0, 1, 1, 2, 3, 5, 8,
13, 21, 34, 55, 89, 144...) we can calculate the percentages.
By combining the Fibonacci series with the Golden Mean we can find mathematical
relationships and then move those relationships to our trading strategies.
There are two main sets of Fibonacci Ratios that I like to point out:
1. Pure Fibonacci Ratios
61.8%, 38.2%, 23.6% etc..
1.618%, 2.618%, 4.236% etc...
2. Assumed Ratios
76.8, 78.6%, 85.1%, 88.6%, 90.8% etc...
Pure Fibonacci ratios
Carry more weight than the others as they are not based on any assumptions. The ratios
are: 61.8%, 38.2%, 23.6%, 1.618%, 2.618%, 4.236% etc...