📚 PASS Investment Adviser (Level 1) Difficulty: Intermediate ℹ️ Info   ~5 min read
📌 Chapter 10.3 — Types of derivative products

Imagine you are reviewing a derivatives portfolio for a high-net-worth client in Mumbai. You notice a call option on a volatile IT stock with a strike price of Rs. 2,000, while the spot price is Rs. 2,100. Your junior analyst calculates an intrinsic value of Rs. 100, but they are confused because the market premium is trading at Rs. 145. This discrepancy is not an arbitrage opportunity; it is the presence of time value, a critical component that every serious investment adviser must account for when assessing risk and pricing.

Option premium is composed of two primary elements: intrinsic value and time value. Intrinsic value is the immediate gain one would realize if the option were exercised today, which is strictly a function of the underlying price relative to the strike. Time value, conversely, represents the premium the market is willing to pay for the possibility that the asset’s price will move further in the desired direction before the contract expires. It acts as a form of ‘volatility insurance’ that diminishes as the expiration date approaches.

In your valuation work, think of time value as a decaying asset. As the time to expiry decreases, the probability of significant price swings decreases, leading to ’theta decay,’ where the time value erodes at an accelerating rate during the final stages of the contract life. If you are recommending a long option position, ignoring time decay is a dangerous oversight; you could be paying a high premium for an option that loses its external value rapidly, even if the underlying stock price remains stagnant.

Consider an investor purchasing an at-the-money Nifty index call option three months before expiry. The premium will be significantly higher than an identical strike expiring in one week, purely due to the expanded timeframe for the index to rally. As an adviser, you must educate clients that they are not just buying the right to purchase the underlying; they are paying for the luxury of uncertainty.

When market volatility increases, this time value expands because the likelihood of the option finishing deep in-the-money also increases, making the premium more expensive despite no change in the underlying price itself.1

Nuance

⚠️ Nuance
A common pitfall is the assumption that an ‘out-of-the-money’ option is worthless. Candidates often mistakenly equate the absence of intrinsic value with a lack of market value, failing to recognize that time value can make such options quite expensive. A sophisticated analyst understands that the total premium is the market’s assessment of future probability, and failing to account for this leads to mispricing of risk in hedging strategies.

Check Your Understanding

Practice Question 1

An investor purchases a 3-month European call option on a stock with a strike price of Rs. 800. The current market price of the stock is Rs. 800, and the option premium is Rs. 40. What is the intrinsic value and time value of this option?

Practice Question 2

As an option approaches its expiration date, assuming the underlying asset price remains constant, what happens to the total option premium?

This is a companion read for Section 10.3 — Types of derivative products from PASS Investment Adviser (Level 1) by Akhilesh Gururani, available on Amazon Kindle.

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  1. Time value is often referred to as ’extrinsic value.’ It is mathematically linked to the option’s implied volatility and the remaining duration until expiration. ↩︎