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Time decay, a term used to describe how the value of a warrant erodes or reduces with the passage of time. Time decay is quantified by theta, time value.   
The portion of a warrant's price that is not accounted for by the intrinsic value, underlying or underlying security, the security over which the warrant is issued. VDAX, volatility index for the German DAX, often used as a proxy for European volatility levels. Volatility IndeX, which gives a measure of implied volatility for the US S&P index, vega. Invest your money in SG derivative products and benefit from highly leveraged investments. E-learning, live prices, real time quotes and financial tools may be consulted online: SG securities London ltd, Société Générale, SG, financial tools, live quotes: SG Warrants offer technical analysis, realtime quotes, sensitivity analysis, ranking, equity derivative The sensitivity of a warrant's theoretical value to a change in volatility, volatility.