Part 3 learn Institutional Trading

The Role of the Strike Price and Expiry Date

Each option contract includes a strike price and an expiry date. The strike price determines the level at which the asset can be bought or sold, while the expiry date sets the time limit. The relationship between the strike price and the market price determines whether an option is in-the-money (ITM), at-the-money (ATM), or out-of-the-money (OTM). As expiry nears, the option’s time value decreases—a concept known as time decay. Short-term options lose value faster, while long-dated ones retain time premium longer. Successful option traders always monitor how close prices are to the strike and how much time remains to expiry before making or exiting trades.