The Complete Guide to Options Volatility: From IV to VRP to Vol Surface

If you trade options, volatility is not just a number on your screen. It is the market's collective forecast of uncertainty, the engine behind option pricing, and the source of some of the most persistent edges in finance. Most traders only scratch the surface: they check implied volatility before selling a put and move on. This guide maps the full volatility landscape. The Two Types of Volatility Statistical (realized) volatility describes what already happened. It's the annualized standard deviation of past returns, typically measured over a 20 or 60 day window. A stock with 20% realized volatility has been moving at roughly a 1.25% daily range. Implied volatility describes what the market expects to happen. It's the volatility figure that, when plugged into a pricing model, produces the option's current market price. Forward-looking. The aggregate expectation of future movement embedded in every option contract. The central tension of all volatility trading: options are priced on im