If you’re wondering what the VIX index is, think of it like a “volatility thermometer”: it doesn’t predict market direction, nor does it move prices up or down; it just shows how much potential volatility U.S. stock market traders have priced into the price of S&P 500 options over the next 30 days.
When the VIX number rises, it means the market expects larger movements and a riskier environment; that’s why it’s also called the “fear index.”
Below, you will learn how to quickly interpret the VIX number and how to use it to identify the risk-taking or risk-averse phase in Forex. In crypto, why you should go for implied volatility indicators of the same market, such as VCRIX, instead of directly generalizing the VIX.
What is the VIX index?
The VIX volatility index was introduced by the Chicago Board Options Exchange (CBOE) in 1993; it was initially based on the implied volatility of S&P 100 options, and in 2003, in collaboration with Goldman Sachs, its calculation method was updated to include S&P 500 options. The VIX is a spot and forward-looking index that uses option prices to indicate the expected volatility of the US stock market over the next 30 days.
Because the S&P 500 represents a large portion of the U.S. stock market, the VIX is used as a measure of overall market volatility and is also called the “fear index” because demand for options increases during times of concern; it usually has an inverse relationship with the S&P 500.
To understand which market segment the VIX is related to, review ” What are financial markets ” before continuing.
How to read the VIX number
This index measures the price of short-term S&P 500 options. That is, the level of expected volatility that the VIX indicates is not based on the current value of the S&P 500 itself, but rather on the price at which traders and investors are willing to buy or sell SPX options in the coming month.
The different levels of volatility can be interpreted as follows:
- Less than 15 : Indicates low volatility and optimism among many market participants.
- Between 15 and 25 : Indicates increased volatility, but is considered “normal” for financial markets.
- Between 25 and 30 : Indicates an increasing trend of volatility and a degree of uncertainty among market participants.
- A number of 30 and above indicates significant volatility and, as a result, higher levels of uncertainty and fear among market participants.
Factors affecting the VIX volatility index
While the VIX index can be an important tool for identifying the level of market volatility, several factors affect it, and understanding these is essential for those who want to incorporate this indicator into their overall trading or investment strategy:
Economic data
Some economic data releases, such as gross domestic product (GDP), inflation, unemployment, or non-farm payrolls (NFP), can affect the VIX; depending on whether their output is negative or positive, the index will increase or decrease. To learn about one of the important inflation indicators, you can read the article ” What is PPI ?”
For example, if the U.S. Department of Labor releases a strong jobs report, it could be viewed as positive news, as increased job openings could strengthen the economy and reduce volatility. However, if the jobs report is weaker, it could be viewed as unfavorable, thus increasing the likelihood of increased volatility.
Options trading activity
When options trading activity increases, the VIX tends to increase; and when activity decreases, it tends to decrease. This is because buying options is often viewed as buying “insurance” against market volatility. So when the option price increases, the VIX also increases, and vice versa.
Market sentiment
When there is a lot of positive activity in the market, investors become more optimistic, which will lead to a decrease in the level of volatility in the VIX. Conversely, if the market shows signs of uncertainty, investors may become more pessimistic, which can increase volatility.
Political events
In recent years, market volatility has been shaped by shifting macroeconomic expectations and political risks. From 2023 onwards, markets became more sensitive to Fed policy surprises, often falling when hopes for a rate cut faded.
Political risk became the main issue in 2025. The new US administration’s more far-reaching tariff measures than expected caused the VIX to jump to 30.8 points in April, the highest since 1990.
Application of the VIX index in the Forex market
In Forex, VIX is more of an indicator of “global sentiment and risk aversion”: when VIX rises, it means that the market has entered a risk-off phase and traders are becoming more cautious; the result in Forex can be a change in behavior on currency pairs (reduced willingness to take risky trades, more attention to safe currencies such as USD/JPY/CHF) as well as a reduction in leverage and position size.
What is the VIX cryptocurrency index?
The classic VIX index was not created for the crypto market at all, as its calculation is based on the price of S&P 500 index options and comes from the US stock market itself.
Practical VIX Equivalents in Cryptocurrency
To gauge expected risk and volatility in crypto, the following three indicators are more useful than a direct generalization of the VIX:
- DVOL Index : An implied volatility index for BTC and ETH, constructed from Deribit options data, and represents a “30-day, fixed-maturity, annualized” number of expected volatility in the options market.
- BVX Index : A 30-day Bitcoin implied volatility index based on CME regulated options; designed as a “forward-looking” index and published during CME trading hours.
- VCRIX Index : A research indicator for crypto market volatility inspired by VIX and built on CRIX; the important point is that VCRIX is typically model-based and acts more as a “crypto ecosystem volatility indicator/forecast” than a common trading benchmark like DVOL or BVX.
Comparison table of VIX usage in different markets
The table below shows a comparison of this indicator across the three markets of crypto, forex, and stocks:
| Market / Index | Basis / Measurement | Common Use |
|---|---|---|
| VIX Index (Stocks) | Expected volatility in the S&P 500 | Measuring market fear, traders’ decision-making |
| Forex | General market risk and volatility concepts | Risk management and market condition assessment |
| Crypto (VCRIX) | Expected volatility of cryptocurrency prices | Analyzing investor sentiment |
How to trade the VIX index?
The VIX index can be traded through derivatives such as options, futures, CFDs, or even VIX-based exchange-traded funds (ETFs). Traders can also use it as part of a hedging strategy, as the VIX index typically has an inverse relationship with the S&P 500 and can help balance portfolio risk (depending on the direction the index moves). You can also use other stock trading symbols to track the index.
For example, suppose a trader has a long position on a stock related to the S&P 500, but his analysis shows that the stock’s value may decline. In this case, he could open a long position, expecting that the VIX is likely to increase.
If his prediction is correct and he closes the trade with a profit, he will recover part of the loss on the original trade. If his prediction is wrong and he closes the trade with a loss, this loss can be partially reduced by the profit made on the original position (stock).
VIX Index Summary
In this article, we have thoroughly covered what the VIX index is and how it is used as a measure of fear and volatility in financial markets. By indicating the expected level of volatility in the market, this index helps traders gauge market risk through sentiment analysis and make more informed decisions about entering or exiting trades, and similar versions in other markets such as crypto also serve the same purpose of measuring fear and confidence.
VIX Index FAQs
1. What is the VIX index?
The VIX index is a measure of market volatility forecast over the next 30 days, also known as the “fear index.”
2. Why is the VIX called the fear index?
Because when traders expect high volatility and risk, the VIX value increases, indicating market fear.
3. What is the VIX index in Forex?
The VIX index is not directly calculated in Forex, but traders use its concept (expected volatility increase) to gauge the overall risk and volatility situation in the market and help make trading decisions.
4. What is the VIX index in crypto?
In the crypto market, there are indicators similar to the VIX to measure volatility expectations, which helps gauge traders’ fear and greed.
5. How to trade VIX?
Traders use VIX levels to identify high or low risk conditions and adjust trading positions accordingly.
