What Is a Put Option?
A put option is a financial contract that gives the buyer the right, but not the obligation, to sell an underlying asset (a stock or index) at a predetermined price (strike price) on or before the expiry date. The buyer pays a premium for this right. Put options are purchased when the buyer expects the underlying asset's price to fall below the strike price. They are used for bearish speculation (betting on price declines) and as portfolio insurance (protecting existing stock holdings from downside risk).
Put Option Example
Nifty 50 is at 22,000. You buy a 21,800 Put option expiring in one week for a premium of Rs 60 per unit. Lot size: 25 units. Total cost: Rs 60 x 25 = Rs 1,500.
- If Nifty falls to 21,500 at expiry: profit = (21,800 - 21,500 - 60) x 25 = Rs 6,000.
- If Nifty stays at 22,000 at expiry: put option expires worthless (market stayed above strike). Loss = Rs 1,500 (premium).
Put Options for Portfolio Protection (Hedging)
If you hold Nifty stocks worth Rs 5,00,000 and fear a short-term market decline, you can buy Nifty put options as insurance:
- Buy Nifty 22,000 put options expiring in one month for Rs 100 per unit x 25 = Rs 2,500.
- If Nifty falls 10% to 19,800, the put option's value increases significantly, partially offsetting portfolio losses.
- This "portfolio insurance" costs the premium (Rs 2,500) but caps your downside exposure.
In-the-Money vs. Out-of-the-Money Put
| Put Type | Strike vs. Spot | Intrinsic Value | Premium |
|---|---|---|---|
| In-the-money (ITM) | Strike above spot price | Yes | Higher |
| At-the-money (ATM) | Strike near spot price | Minimal | Moderate |
| Out-of-the-money (OTM) | Strike below spot price | None (only time value) | Lower |
Put Option Profit and Loss
- Put buyer: Maximum profit if the asset falls to zero (limited by strike price). Maximum loss: premium paid. Bearish strategy.
- Put seller: Earns premium upfront. Maximum profit: premium received. Loss increases as price falls below strike. Bullish or neutral strategy.
Key Takeaway
Put options serve two valuable purposes: directional speculation on falling prices and portfolio protection against downside. Understanding when and how to use put options is a fundamental derivatives skill. Use the Lemonn app to track Nifty and stock price trends, understand volatility patterns, and build the knowledge needed to incorporate put options effectively in your investment or trading strategy.
