Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. MPS and MPC measure the portion of extra ...

Marginal cost measures the cost of producing one more unit of a good. Zero marginal cost occurs when extra units can be produced at no additional cost. Marginal costs include variable costs and can ...

The world of microeconomics and business decision-making hinges upon a key concept: marginal cost. In the simplest terms, marginal cost represents the expense incurred to produce an additional unit of ...

Like the stock market, margin debt has risen sharply in recent months. According to FINRA's latest margin statistics, borrowing by investors in November 2017 stood at an all-time high of $627.4 ...