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 ...

Retail market structure refers to the number of companies that sell similar or identical products in the same geographical area. An oligopoly describes a small group of companies that collude to raise ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Michael Boyle is an experienced financial ...

Roula Khalaf, Editor of the FT, selects her favourite stories in this weekly newsletter. Recurring themes in past A level microeconomics are oligopoly, collusion, price discrimination. This article ...