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. Somer G. Anderson is CPA, doctor of ...

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 ...

Businesses don't operate in a bubble -- their sales and profitability are affected by the business environment in which they operate. Many factors affect this environment, from regulation and ...

Three firms dominate the target date fund market, constituting an oligopoly. One firm – Vanguard – owns 72% of the passive TDF market, constituting a monopoly. Oligopolies and monopolies are bad. They ...

Behind the scenes of the more obvious oligopolizations we see emerging in today's tech industry — the ones regarding data, computer processing power and consumer attention — is a related but subtler ...