Theory: Fibonacci

My trading activity has been very low lately, but Ill be sure to post at least the results soon, but instead, I thought I would put together a new theory article for you all, this time about Fibonacci.

Fibonacci was named after a mathemetician and trained accountant by the name of Leonardo Pisano in the 1100's (ah yes I remember them well ... those were the days). He came up with, amongst other things, a series of numbers that is now referred to as the Fibonacci sequence, where each number is the sum of the two numbers preceding it. Here is the beginning of it, and of course it goes on to infinity:

1, 1 (1+0), 2 (1+1), 3 (2+1), 5 (3+2), 8 (5+3) etc.

Pretty simple huh! ... this guy is famous cause of that simplicity though, which gives us all hope ;). Anyhow from these numbers a whole bunch of ratios can be taken from them, now I'm not going to pretend to understand them, but the main ratios, that are reproduced through the world, in nature, buildings, cells, ice cream ... ok not ice cream ... are:

0.236, 0.50, 0.382, 0.618 ...

There are many more, but these are the main ones to concern us beginner traders, and here is why. Quite often in the liquid markets of Forex, prices respect these levels when they move, meaning, just like Pivot Lines, prices will quite often pause, and more often reverse at these levels. Most charting packages have the ability to add Fibonacci lines to your charts, for example in Metatrader 4 all you do is; if the price was moving down, drag a line from the recent peak, to the most recent bottom and the lines are added for you. Unfortunately Marketiva does not offer them as yet, however here is a chart with them drawn:

The blue dotted lines are the fibonacci lines that correspond to the ratio's I was talking about. You can see in the move up, that the 38.2 fibonacci line formed the point for the price to reverse its retracement and continue with the trend (support). Of course, any of these lines could have been the points of reversal, but a reversal at the 38.2 line is a good sign that the trend will continue as the retracement was shallow.

The other line that I find most commonly hit is the 61.8 line as shown here:


Be a little more wary when such a deep retracement occurs, as it is less likely (although not in the above case) that the previous support will be broken again.

So what do you do with this knowledge? Can you trade with fibonacci alone? In my opinion, no as you don't know which line will be the turning point without the aid of other indicators or reading the price action, but they can be an excellent addition to your trading system to confirm other signals. For example if you have a signal from another indicator telling you a reversal is about to happen, and price is hovering at a fibonacci line, this might give you added confidence to place the trade.

Happy trading!