What is a put option and how does it work?

Short answer: A put option gives you the right, but not the obligation, to sell an asset at a predetermined price by a specified date.

A put option is a financial derivative that provides its holder with the right (but not the obligation) to sell a specific underlying asset at a pre-determined price (strike price) before or on a certain expiration date. This type of option is particularly useful for investors who anticipate a decline in the value of an asset, as it allows them to lock in a selling price and potentially limit their losses.

Understanding Put Options

In India, put options are traded on stock exchanges like the National Stock Exchange (NSE) and Bombay Stock Exchange (BSE). These exchanges offer various underlying assets for trading put options, including individual stocks, indices, and commodities. When you purchase a put option, you essentially bet that the price of the underlying asset will fall below the strike price by the expiration date.

How to Use Put Options

Hedging Strategy

Put options can be used as a hedging tool in your portfolio. If you hold shares of a company and are concerned about a potential market downturn, buying put options on those stocks can help protect your investment from losses if the share prices drop significantly. For example, if you own shares of Reliance Industries Ltd., purchasing put options with a strike price lower than the current market value can provide a safety net.

Speculation

Put options are also used for speculation. Traders who believe that the underlying asset’s price will decrease can buy put options to profit from this decline. For instance, if you predict that the Nifty index will fall in the coming weeks, buying put options on the Nifty can be a way to bet against the market.

Key Features of Put Options

Strike Price

The strike price is the predetermined price at which the underlying asset can be sold. It’s crucial because it sets the breakeven point for your option. If you buy a put option with a strike price of ₹20,000 on Reliance Industries Ltd., and the stock falls to ₹18,000 by expiration, you can sell your shares at ₹20,000 instead of the lower market value.

Expiration Date

The expiration date is the last day you can exercise your put option. If you hold a put option until this date but the underlying asset’s price remains above the strike price, you will likely let the option expire worthless. Therefore, it's important to monitor the underlying asset and decide whether exercising or holding onto the option makes sense before the expiration date.

Premium

The premium is the cost of buying a put option. It acts as your insurance fee for having the right to sell at the strike price. The higher the risk you are willing to take, the lower the premium will be. Conversely, if you believe the underlying asset’s price will fall significantly, you might be willing to pay a higher premium.

Practical Considerations

Margin Requirements

When trading put options in India, you need to meet margin requirements set by SEBI and your broker. These margins ensure that you have sufficient funds to cover potential losses. For instance, if the market value of an option is ₹50, but the minimum margin requirement is ₹100, you must deposit ₹100 with your broker.

Tax Implications

In India, there are specific tax rules for trading options. Profits from exercising put options may be subject to capital gains tax, depending on how long you held the option and whether it was used for hedging purposes. It’s essential to understand these tax implications before entering into any option trades.

Conclusion

Put options provide a strategic way to manage risk or speculate on market movements in India. By understanding their mechanics, features, and practical applications, Indian investors can make informed decisions when using put options as part of their investment strategy. Always consider the underlying asset’s performance, expiration date, strike price, and premium before making any trades.

Sources: Put Option: What It Is, How It Works, and How to Trade · Put option · The Options Institute How Put Options Work | Cboe · put option | Wex | US Law | LII / Legal Information Institute · PUT OPTION | definition in the Cambridge English Dictionary

This explainer was researched and drafted by the Investdesk AI Desk to answer a question readers commonly ask. It is general information, not personalised financial advice.