Zero-Sum Game

Profit on an investment, expressed as a percentage of the investment.

The money a firm is left with from sales after subtracting taxes and different business costs.

A measure of how much the prices of an asset or index vary over time.

A period of time that starts with the first day of the current calendar year and ends with today.

A situation in which a market or industry is controlled by a small group of companies.

An exchange-traded fund that is comprised of a set of stocks.

A type of financing that investors provide to startups, who sometimes announce getting said financing in TechCrunch, to big fanfare.

The concept that money you have now is more valuable than the same sum in the future.

A mathematical test used to determine whether a claim is true or false.