AdvancedOptions Basics
Options Greeks: Delta, Gamma, Theta
Options Greeks measure how sensitive an option's price is to various factors. Delta is the most important: it tells you how much the option price changes per $1 stock move.
TL;DR
Options Greeks measure how sensitive an option's price is to various factors. Delta is the most important: it tells you how much the option price changes per $1 stock move.
Delta (Ξ)
Delta measures option price change per $1 stock move. Call Delta: 0 to 1 (stock rises β option rises). Put Delta: -1 to 0 (stock falls β option rises). Delta=0.5 means a $1 stock rise increases Call value by $0.50. Deep ITM options have Delta near 1; deep OTM near 0. Delta also approximates the probability of expiring in-the-money.
Key Terms:
Delta