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 ...

Steven Nickolas is a writer and has 10+ years of experience working as a consultant to retail and institutional investors. Cierra Murry is an expert in banking, credit cards, investing, loans, ...

Michael Porter does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

A key risk-management tool in the complex world of derivatives margin trading is variation margin. Variation margin is used to fully collateralize derivative contracts and ensure the stability of the ...

Genetic variation describes naturally occurring genetic differences among individuals of the same species. This variation permits flexibility and survival of a population in the face of changing ...

A central part of quality management involves tracking, identifying and managing changes that occur in a system or process; these are variations. When changes are planned and executed well, the ...