VIXvísitölunni
VIXvísitölunni, more commonly known as the VIX, is a real-time stock market index that represents the market's expectation of 30-day forward-looking volatility derived from the prices of S&P 500 index options. It is a product of the Chicago Board Options Exchange (CBOE). The VIX is often referred to as the "fear index" because it tends to spike when investors are fearful or uncertain about the market's future direction. Conversely, it generally declines when investor confidence is high and the market is stable.
The calculation of the VIX involves a weighted average of the implied volatilities of a broad range