Fibonacci Expansion is largely similar to Fibonacci Retracement and intended for determining of the end of the third wave. Unlike Fibonacci Retracement, this instrument is built not on the only one trend line, but on two waves.
First, the line of the first wave is drawn, its height will be considered as a unit interval later on. The end of the second wave serves as a reference point for building an invisible vertical line. The corresponding lines are drawn from the reference point on the interval equal to 61.8, 100%, and 161.8 per cent of the unit interval. The third wave is considered to finish near these levels.