How Does the Relationship between Delta and the Probability of an Option Expiring In-the-Money Affect Trading Strategy?
For European options, Delta is often used as a rough approximation of the probability that the option will expire in-the-money (ITM). A high Delta (e.g.
0.70) suggests a 70% chance of expiring ITM. This relationship influences a trader's decision on where to place limit orders.
Options with a high ITM probability are generally more liquid and have tighter spreads, leading to lower slippage. Traders often focus on these contracts for lower execution risk.