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 ...

To calculate a price-weighted average, sum the stock prices and divide by the number of stocks. This average reflects changes in higher-priced stocks more than lower-priced ones. Use price-weighted ...

Cost basis is the original purchase price of an asset. Tracking cost basis is key to tax-efficient investing. Many, or all, of the products featured on this page are from our advertising partners who ...