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A measure of risk based on the standard deviation of the asset return. Volatility is a variable that appears in option pricing formulas, where it denotes the volatility of the underlying asset return from now to the expiration of the option. There are volatility indexes. Such as a scale of 1-9; a higher rating means higher risk.
Copyright © 2012, Campbell R. Harvey. All Rights Reserved.


A measure of a security's stability. It is calculated as the standard deviation from a certain continuously compounded return over a given period of time. It is an important measure in quantifying risk; for example, a security with a volatility of 50% is considered very high risk because it has the potential to increase or decrease up to half its value. Volatility may influence the type of investments one makes: one may directly invest in non-volatile securities, such as a certificate of deposit, but highly volatile securities lend themselves more to short selling and other forms of hedging.
Farlex Financial Dictionary. © 2012 Farlex, Inc. All Rights Reserved


The term volatility indicates how much and how quickly the value of an investment, market, or market sector changes.

For example, because the stock prices of small, newer companies tend to rise and fall more sharply over short periods of time than stock of established, blue-chip companies, small caps are described as more volatile.

The volatility of a stock relative to the overall market is known as its beta, and the volatility triggered by internal factors, regardless of the market, is known as a stock's alpha.

Dictionary of Financial Terms. Copyright © 2008 Lightbulb Press, Inc. All Rights Reserved.
References in periodicals archive ?
Therefore, it is difficult for FeRAM based nonvolatile flip flop DFF to be used as a library tool for automatic layout design of SoCs.
All data written to the FRAM memory is immediately nonvolatile, without the delays often associated with older nonvolatile memory technologies.
It's nonvolatile yet has access speeds that rival those of conventional memories.
Symposium on Materials and Processes for Nonvolatile Memories (2007: San Francisco) Ed.
Matrix 3DM is an inexpensive, high-capacity, permanent, nonvolatile memory and the first product based on Matrix's core innovation--the design and manufacture of three-dimensional low-cost semiconductor products using standard materials and methods.
Applications include analytical laboratories, e.g., head space analysis; trace gas analysis; environmental analysis, e.g., ambient air monitoring; coupling with Curie-point-pyrolysis for direct measurement of nonvolatile compounds; residual gas analysis; and biotechnology/biochemistry, e.g., control of fermentation processes.
A nonvolatile memory allows the unit to remember its position even after a power down.
To create so-called nonvolatile electronic memory, the researchers built one-bit, prototype memory cells from layers of metal and semiconductors, manipulating the energy barriers that appear naturally at the interfaces.
The company's family of low-power nonvolatile state savers includes the FM1105 operating at 5V, and the FM1106 operating at 3V.
In these proceedings of the symposium held in November and December of 2004, contributors describe their research in nonvolatile memories with discrete storage nodes, ferroelectric memories, magnetoresistive random access memory, nanoparticle memories, materials form non-volatile memories, and organic and resistive memories.