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January 31, 2023 

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LERNER INDEX: The difference between price (p) and marginal cost (mc) as a fraction of price, that is [p-mc]/p. The Lerner index is usually taken as an indicator of market power because the larger the index, the larger the difference between price and marginal cost, that is, the larger the distance between the price and the competitive price. The Lerner index depends on the elasticity of demand. The Lerner index is also called the price-cost margin.

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MARGIN REQUIREMENT: The fraction of the purchase price of financial investments, like stocks and bonds, that the buyer must pay for in cash. The remaining part of the purchase price can thus be financed with credit.

     See also | corporate stock | corporate bond | credit | leverage | rate of return | financial markets | stock market | Federal Reserve System | speculation |


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MARGIN REQUIREMENT, AmosWEB GLOSS*arama, http://www.AmosWEB.com, AmosWEB LLC, 2000-2023. [Accessed: January 31, 2023].


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FREE TRADE AREAS

A group of nations that have agreed to eliminate (or at least minimize) trade barriers -- especially tariffs, import quotas, and assorted regulatory non-tariff barriers -- within the group to encourage mutual trade. Free trade areas are usually contiguous or adjacent nations, often located on the same continent. Three noted free trade areas are comprised of nations located in North America, Europe, and Asia.

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