Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

We uphold a strict editorial policy that focuses on factual accuracy, relevance, and impartiality. Our in-house created content is meticulously reviewed by a team of seasoned editors to ensure ...

On Friday, March 20, as the U.S. stock market closed out its worst week since 2008 amid coronavirus-related turmoil (before recovering somewhat early the following week), investors were left with a ...

Stella Osoba is the Senior Editor of trading and investing at Investopedia. She co-founded and chaired Women in Technical Analysis. She has 15+ years of experience as a financial writer and technical ...

After dividing 1 by 999-quattuordecillion (a number that’s 48 integers long), you get the Fibonacci sequence presented in neat, 24-digit strings. Here’s why that happens. As a quick refresher, the ...

Fibonacci trading: It's a math sequence that few retail investors use when planning their trades, one left mainly to technical traders at institutions. It's reliability is questionable, though ...

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 ...

The Fibonacci sequence is a mathematical concept that has been around for centuries. Named after Italian mathematician Leonardo of Pisa, also known as Fibonacci, the sequence is derived by adding the ...

Scientific American presents Math Dudeby Quick and Dirty Tips. Scientific American and Quick and Dirty Tips are both Macmillan companies. It’s not often someone suggests that knowing some math could ...