Short answer: Option volatility is the expected size of price swings in an asset, and it is the one pricing input that must be estimated. Traders compare it with option prices to judge whether premiums look cheap or expensive, and they build strategies around their view of it.
Last reviewed: 8 November 2026
At a glance
| Term | What it means |
|---|---|
| Implied volatility | The future price fluctuation that an option’s market price implies over its remaining life |
| Historical volatility | How much the underlying’s price has moved in the past, such as the previous month or year |
| Short straddle | Selling a call and a put at the same strike price to collect both premiums |
| Iron condor | Out-of-the-money call and put spreads that keep profit potential while reducing risk compared with a short strangle |
| Naked call or put | Selling an option without a hedge, with effectively unlimited loss potential if the market moves against the forecast |
| IV crush | A sharp fall in implied volatility after an event such as earnings, which lowers premiums |
What goes into an option’s price?
An option is a contract that gives the buyer a right, but not an obligation, to buy or sell an underlying asset, such as a share, at a fixed strike price (the agreed price) by a set date called expiry. The amount paid for the contract is the premium. A call gives the right to buy, and a put gives the right to sell.
The premium is set by seven inputs: the underlying’s current price, whether the option is a call or a put, time to expiry, the risk-free interest rate (the return on a riskless investment), dividends on the underlying, the strike price, and volatility. Each input pushes the premium up or down.
Why is volatility the hardest input to pin down?
The other six inputs can be read directly from the contract and the market. Volatility has no fixed value, so it must be estimated. That is why it is the most influential input in pricing: a small change in the estimate can move the premium a lot.
How is historical volatility different from implied volatility?
Historical volatility looks backwards. It measures how much the underlying’s price has moved over a past period, such as the previous month or year.
Implied volatility looks forwards. It is the level of future price fluctuation that the current market price of the option implies over its remaining life. It is not a forecast of direction. An option can imply large swings in either direction, and the number says nothing about which way the price will go.
How do premiums and implied volatility move together?
Option premiums and implied volatility generally move in the same direction. When implied volatility rises, premiums generally rise. This benefits option buyers, who hold a contract that has become more valuable, and increases risk for option sellers, who have collected a premium that could now be exceeded by losses.
How does a short straddle work, and what is its catch?
A short straddle sells a call and a put at the same strike price, collecting both premiums at once. It suits a view that implied volatility will fall, particularly near expiry, because a falling implied volatility lowers the premiums the seller would have to buy back.
The catch is that the position profits only while the price stays near the strike. The total premium collected sets two breakeven points, one above and one below the strike. Beyond either breakeven, losses grow with each further rupee the price moves, and the position is written without a hedge.
How does an iron condor reduce risk?
An iron condor combines out-of-the-money call and put spreads. Out-of-the-money means the strike sits away from the current price. A spread pairs a sold option with a bought option, so the trader holds protection against large moves.
Compared with a short strangle, which sells an out-of-the-money call and put without that protection, the iron condor reduces risk while keeping profit potential. The catch is that the bought options cost premium, so the net amount collected is smaller than it would be from the strangle alone.
Why can premiums fall after results are announced?
After an event such as earnings, implied volatility can drop sharply, which lowers option premiums even if the underlying price barely moves. This is called IV crush. A buyer can lose money on a correct view of direction if the drop in implied volatility outweighs the gain from the price move.
What does a hypothetical example look like?
Hypothetical example, with invented figures for illustration only: Suppose a share trades at Rs 500. A trader sells a call at a Rs 500 strike for a premium of Rs 30 and a put at the same strike for Rs 25, collecting Rs 55 per share. For 100 shares, that is Rs 5,500 in total.
The breakevens are Rs 555 (500 plus 55) and Rs 445 (500 minus 55). If the share closes at Rs 600 at expiry, the call is worth Rs 100 per share, the put is worthless, and the net loss is Rs 45 per share, or Rs 4,500 for 100 shares.
Now suppose an earnings announcement passes with the share still at Rs 500, and IV crush cuts the call and put to Rs 15 each. The seller could buy both back for Rs 30 instead of Rs 55, which is a gain of Rs 25 per share. The buyer of the same options would see the reverse.
Why are naked positions the riskiest?
Writing naked calls or puts means selling an option without owning the underlying or holding another option to limit the loss. Naked positions carry effectively unlimited loss potential if the market moves against the trader’s forecast. A naked call loses value for the seller every rupee the price rises above the strike, and nothing in the contract stops that rise.
Frequently asked questions
Does implied volatility predict which way prices will move?
No. Implied volatility is the level of future price fluctuation that the current option price implies over its remaining life, not a prediction of direction.
Why can option premiums fall after earnings even if the stock barely moves?
Implied volatility can drop sharply after an event such as earnings, which is called IV crush. This lowers premiums even when the underlying price barely moves.
Is an iron condor free of risk?
No. It reduces risk compared with a short strangle while keeping profit potential, but it still carries risk.
Sources and last check
Facts in this article were checked against the sources below on 8 November 2026. Rules and figures can change; check the primary source before acting.
- groww.in (broker education)
- icicidirect.com (broker education)
- dhan.co (broker education)
- upstox.com (broker education)
- kotakneo.com (broker education)
This article is general information, not investment advice. MyFinanceBandhu is not a SEBI-registered investment adviser.