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 ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Robert Kelly is managing director of XTS ...

When Santa comes to town in late December for investors, it's usually a good indicator for the following year. Bitcoin's four-year cycle appears to be broken. Here's what's actually driving prices now ...