Volatility is a highly cited term for market risks. Each and every trader experiences the effects of volatility on a daily basis, making understanding volatility and what it is all about an absolute must for them. Chances and risks are two sides of one coin, because by deliberately integrating volatility into ones trading strategy, one can also exploit its opportunities.
Volatility is a measure for the fluctuation range of a security, a currency or an index and is one of the most important parameters for the price development of an option. Professional investors work intensely with the expected fluctuations of the market, as future price movements decide on profit or loss. High volatility means prices are fluctuating strongly. The higher the expected fluctuation, the higher the likelihood, that the option develops in the investors favor and that a higher price has to be accepted for the particular option. With only low price fluctuations "Vola" goes down as does the price of the option that goes with it.
A distinction is made between historical and implied volatility.
Historical volatility is calculated on the past prices of an underlying asset. It is about the average fluctuation rate of prices, e.g. a stock or an index during a defined time period in the past. The implied volatility is the volatility expected by the market and included in the current price of the option. Is the implied volatility, i.e. the expected fluctuations above the historical volatility, the option will be somewhat more expansive compared to the theoretical price derived from the option-price theory.
Barometer for volatility
Certain indexes are considered barometers for volatility. For example, the VDAX® indicates the implied volatility of the leading German index DAX® over a time period of 45 days in percentage points. A high figure point to an unruly market, whereas lower figures give reason to expect a development without heavy price fluctuations. It does not however give any hints on the direction of the changes, whether they will be rising or falling values.
The VSTOXX® is the benchmark index for the volatility of the European stock market, showing the percentage of the expected volatility in the upcoming 30 days for the EURO STOXX50® Index.