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In information retrieval, an index term (also known as subject term, subject heading, descriptor, or keyword) is a term that captures the essence of the topic of a document. Index terms make up a controlled vocabulary for use in bibliographic records .
Index numbers are used especially to compare business activity, the cost of living, and employment. They enable economists to reduce unwieldy business data into easily understood terms. In contrast to a cost-of-living index based on the true but unknown utility function, a superlative index number is an index number that can be calculated. [1]
Following is a glossary of stock market terms. All or none or AON: in investment banking or securities transactions, "an order to buy or sell a stock that must be executed in its entirely, or not executed at all". [1] Ask price or Ask: the lowest price a seller of a stock is willing to accept for a share of that given stock. [2]
In addition to investing in broad-based stock index funds, you can choose from a range of bond index funds: for example, short-term bonds with maturity dates in the near future, long-term bonds ...
A low-cost index fund can be a great way for both beginning and advanced investors to invest in the stock market. Index funds can reduce your risks compared to investing in individual stocks, and ...
The mean free float market capitalization of the S&P 100 is over 3 times that of the S&P 500 ($135 bn vs $40 bn as of January 2017); as such, it is larger than a large-cap index. The "sigma" of companies within the S&P 100 is typically less than that of the S&P 500 and thus the corresponding volatility of the S&P 100 is lower.
Stock market indices may be categorized by their index weight methodology, or the rules on how stocks are allocated in the index, independent of its stock coverage. For example, the S&P 500 and the S&P 500 Equal Weight each cover the same group of stocks, but the S&P 500 is weighted by market capitalization, while the S&P 500 Equal Weight places equal weight on each constituent.
In statistics and research design, an index is a composite statistic – a measure of changes in a representative group of individual data points, or in other words, a compound measure that aggregates multiple indicators. [1] [2] Indices – also known as indexes and composite indicators – summarize and rank specific observations. [2]