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Finance Dictionary and Glossary of Investment Terms
Trading Index. A market indicator used in technical analysis, calculated as follows: Arms Index = ((# of advancing issues / # of declining issues) / (Total up volume / Total down volume)). A value of less than 1 is considered bullish, greater than 1 bearish. also called Arms Index.
sed in the context of general equities. Short-term trading index that shows a minute-by-minute correlation of the ratio of advances to declines to the ratio of advancing volume to declining volume. Depicts whether changes in the relationship of advances and declines are taking place more quickly or more slowly than changes in the general volume movement of the market, <1 indicates a bull market, 1 = neutral; and > 1 bear market. See: A/D and arms index.
Short for TRaders INdex. A technical analysis indicator calculated by taking the advances to declines spread and dividing that by the volume of advances to declines.