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Economic and market data that represent an overall trend. The Dow Jones Industrial Average is an example of a stock market barometer.

Barometer Stock

A stock in a well-known or highly-regarded company in a given sector. The performance of a barometer stock is considered to be an indicator of the performance of its particular sector or industry. The term "barometer stock" is chiefly British; in the U.S., the primary term is bellwether stock.


An indicator of fluctuations. For example, the S&P 500 is a barometer for stock market movements. Likewise, long-term interest rates are a barometer of inflationary expectations.
References in periodicals archive ?
41) The decline of the portrait frontispiece in late eighteenth-century novels (except when produced as part of an author's collected works) barometrically marks these broadening generic interests.
In earlier work I observed that the volume of social research on screen violence has similarly varied: its quantity has a way of tracking barometrically the raisings and lowerings of the temperature of political debate (and its consequences for the flow of research funding) see Sparks 1992: 19-21; see also Rowland 1983).
If the balloon dipped below 30,000 feet, a barometrically controlled electrical system caused a sandbag to drop and the balloon would rise again.