A client holding an equity portfolio approaches you in Mumbai, frustrated that the ‘insurance’ they purchased via long-dated out-of-the-money put options hasn’t yielded any profit, despite the market remaining stagnant for weeks. They ask why their premium is dwindling daily even though the underlying stocks have not moved significantly. This is a classic moment where you, as a distributor, must explain the concept of time decay, or ’theta’, which acts as the silent eraser of option premiums.
Time decay refers to the inevitable reduction in an option’s extrinsic value as it approaches its expiration date. Every option contract has a fixed lifespan, and as each day passes, the probability of the underlying asset making a significant move decreases. For an investor, this means that holding long positions—buying calls or puts—requires the market to move in their favor fast enough to offset the daily erosion of their capital.
If you are recommending a strategy involving long options, the client must understand that they are essentially racing against the calendar.
In the context of SIFs or structured strategies, fund managers often account for this decay by selling options to generate income, effectively shifting the burden of time decay from the buyer to the seller. When a retail investor buys a call option hoping for a market rally, they are long theta; if the market stays flat, the seller of that option collects the premium, and the investor loses value.
This is why advising clients on complex derivative strategies requires a clear assessment of their investment horizon and risk tolerance. If the horizon is short, buying options is a high-stakes gamble; if the goal is portfolio hedging, the cost of this daily decay must be framed as a necessary ‘insurance premium’.
When conducting a suitability assessment, remind the client that options are wasting assets. If a client expects a large market movement but cannot pinpoint the exact timing, they might face heavy losses purely from time decay, even if their market direction prediction eventually turns out to be correct. Always ensure that the capital allocated to such strategies does not compromise the liquidity needs of the client, especially when they are transitioning from traditional mutual fund schemes to more sophisticated investment vehicles.
Nuance
Check Your Understanding
An investor purchases a Nifty 50 call option with a strike price of 22,000, expiring in three months. If the market remains completely flat for the next month, what is the most likely impact on the option’s premium?
A client is looking to hedge a large equity portfolio against a market downturn. They want to buy put options for protection. As a distributor, what risk must you highlight regarding the cost of this ‘insurance’?
This is a companion read for Section 17.2 — Use of Options for Trading and Hedging from Pass Certification Examination for Mutual Fund - Specialized Investment Fund Distributors by Akhilesh Gururani, available on Amazon Kindle.
Copyright © 2026 Akhilesh Gururani. All rights reserved.