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 ...

Julie Young is an experienced financial writer and editor. She specializes in financial analysis in capital planning and investment management. Michael Boyle is an experienced financial professional ...

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 ...

When businesses are planning how much to produce, they must pay close attention to marginal costs and marginal benefits – the incremental changes in costs and benefits that result from an increase in ...

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 ...