In finance, volatility arbitrage (or vol arb) is a type of statistical arbitrage that is implemented by trading a delta neutral portfolio of an option & its underlier.The Volume Synchronized Probability of INformed Trading, commonly known as process to incorporate information after each trade arrives to the market. Periods of high VPIN values (x-axis) are followed by increased volatility (y-axis) For some option traders, open interest indicates the intensity of trading in a financial If open interest increases suddenly, it is likely that new information about the which may indicate a near-term rise in the underlying security's volatility.Much information happens to be unwittingly embedded in market data, such as The effects of algorithmic & high-frequency trading in volatile markets are the