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In the realm of options trading, understanding how to "exercise" an option is crucial for maximising your returns or mitigating potential losses. This blog delves into the intricacies of option exercise, exploring its mechanics, different scenarios, and key considerations for informed decision-making.

What is exercising an option?

An option contract grants the holder a right, but not an obligation, to buy (call option) or sell (put option) the underlying asset at a predetermined price (strike price) on or before a specific date (expiry date). Exercising an option refers to the act of activating this right.

Let's break it down further:

  • Call Option: Exercising a call option allows the holder to buy the underlying asset at the strike price from the option seller.
  • Put Option: Exercising a put option allows the holder to sell the underlying asset at the strike price to the option seller.

Reasons to exercise an option

Investors might choose to exercise an option for various reasons:

  • Capturing Intrinsic Value: If the underlying asset price for a call option is significantly higher than the strike price, or vice versa for a put option, exercising allows the holder to lock in the profit (intrinsic value) represented by the difference.
  • Taking Delivery of the Underlying Asset: Some investors might exercise an option to acquire or sell the physical underlying asset, such as owning shares of a company.
  • Hedging Existing Positions: Options can be used to hedge existing holdings. Exercising a put option can protect against a decline in the underlying asset price if you already own the stock.

When can you exercise an option?

In F&O trading, options are typically exercised close to expiry, especially if they are "in the money" (meaning the exercise becomes profitable). However, there can be exceptions:

  • Early Exercise: In some cases, exercising an option early might be advantageous. For example, if an investor receives a dividend on the underlying asset and the option contract doesn't account for dividends, exercising early allows them to capture the full dividend benefit.

Things to consider before exercising an option

Before exercising an option, consider the following factors:

  • Expiry Date: Options are only exercisable on or before the expiry date. Exercising after the expiry renders the option contract worthless.
  • Exercise Costs: There might be associated fees for exercising an option, such as commissions or exercise charges. Factor these costs into your decision.
  • Alternative Uses of Capital: Consider if there might be more profitable uses for the capital required to exercise the option.

Letting the option expire

In most cases, options contracts expire unexercised. This happens because the option becomes worthless (out of the money) or because there's no longer a financial benefit to exercising. The option seller keeps the premium received for selling the option contract.


Exercising an option is a strategic decision that can significantly impact your options trading outcomes. By understanding the mechanics, potential benefits, and considerations involved, you can make informed choices about whether to exercise an option or let it expire. Remember, options trading carries inherent risks, so thorough research, a well-defined strategy, and disciplined risk management are essential for success.

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