árfolyamvolatilítás

Árfolyamvolatilitás refers to the degree of variation of a trading price series over time, as measured by the standard deviation of its logarithmic returns. In simpler terms, it indicates how much the price of an asset, such as a stock or currency, is expected to fluctuate. High volatility means the price can change dramatically in a short period, while low volatility suggests more stable price movements.

Volatility is a crucial concept in finance, particularly in risk management and option pricing. Investors often use it as a measure of risk; a highly volatile asset is generally considered riskier because its future price is less predictable. Traders may seek out volatile assets to profit from rapid price swings, while more risk-averse investors might prefer assets with lower volatility.

Several factors can influence price volatility. These include economic news, political events, company-specific announcements, and overall market sentiment. For example, unexpected interest rate changes or geopolitical tensions can lead to a sharp increase in volatility across various financial markets.

The most common measure of volatility is historical volatility, which calculates the standard deviation of past price movements. Implied volatility, on the other hand, is derived from option prices and represents the market's expectation of future volatility. Understanding and managing price volatility is a fundamental aspect of financial analysis and investment strategy.