A Fibonacci Tour Of The SPY

 | Apr 11, 2019 08:05AM ET


If you have heard of Leonardo da Pisa then you may already be familiar with the story of how he described the growth of two rabbits into a population and thus presented the Fibonacci sequence. This powerful force in nature is pervasive. But it does not stop in nature.

Perhaps because we are so exposed to the sequence and the ratios that it creates, it shows up in human output as well, like artwork. It also plays a role in markets. The current price action in the S&P 500 ETF is showing the impact of Fibonacci ratios, the ratio of adjacent or nearby numbers in the sequence.

Many know the big ratios, 0.618 or Φ, the ratio of adjacent numbers, 0.382, the ratio of numbers 2 apart in the sequence, and 0.5, halfway, but there are lesser known ratios at play as well. The square root of Φ or 0.786 and the square root of that 0.886 also become important. Also the ratio of numbers 3 apart, 0.236 plays a role.