However, you are probably more familiar with Fibonacci extension and retracement levels.
It’s all based on the same logic.
Fibonacci numbers appear unexpectedly often in mathematics, so much so that there is an entire journal dedicated to their study, the Fibonacci Quarterly. Applications of Fibonacci numbers include computer algorithms such as the Fibonacci search technique and the Fibonacci heap data structure, and graphs called Fibonacci cubes used for interconnecting parallel and distributed systems.
They also appear in biological settings, such as branching in trees, the arrangement of leaves on a stem, the fruit sprouts of a pineapple, the flowering of an artichoke, an uncurling fern, and the arrangement of a pine cone's bracts.
Look at the image above again, of Fibonacci in nature!
So what?
The fact that these numbers appear in nature, it has clearly been adopted in art and architecture – this is due to the human desire for pattern recognition. It’s built into our DNA, the fact that we as a collective want to identify such patterns, will in fact drive charts.
I have written articles on Elliott Waves - which again is quite possibly one of the biggest use cases for Fibonacci, definitely an easy way to see the powers at work.
Here’s a link to one such article: https://www.tradingview.com/chart/GBPUSD/B4FcC4wa-Simplified-Elliott-It-can-be-confusing/
How to use Them?
If you have been trading for some time you are most likely familiar with Fibonacci techniques, if you are new, here is some basic logic to get you started.
As mentioned above there are several tools for Fibonacci, as a new trader I would suggest only looking at extensions and retracements to start you off.
Retracement
These levels often work well as support and resistance, you will find opportunities to enter on pullbacks (retracements) against the overall trend. Common levels here are 23.6%, 38.2%, 50% (although it’s not technically a real fib level, another topic for another time) then of course the 61.8% and the 78.6%.
How to draw these on the chart – you are looking for 3 points let’s assume A,B & C. You are looking for A to be at the start of your trend. Often this will be a swing low or high.