Percentage-retracement levels are yet another technical indicator useful in defining short- and long-term price trends in a security or sector. Percentage retracement levels are based upon the ...

Trying variants of a simple mathematical rule that yields interesting results can lead to additional discoveries and curiosities. The numbers 1, 1, 2, 3, 5, 8, 13, 21, 34, and 55 belong to a famous ...