ITM, ATM, OTM Options: Meaning & Moneyness Explained

You have probably opened the NSE option chain at some point, scrolled through a long list of strikes above and below the current Nifty level, and noticed that some rows carry premiums many times larger than others, while one row in the middle usually sits highlighted.

If you have already bought a call or a put, there is a good chance you picked a strike without fully knowing why it was priced the way it was, or why it behaved so differently from a strike sitting further away from the market. That difference has a name: moneyness.

Once you understand it, you will be able to look at any strike, on any expiry, and immediately know which category it falls into, roughly what it should cost relative to its neighbours, and how it is likely to behave as Nifty moves. This article builds that understanding from first principles, using the three terms you will run into in every options article and every option chain from here on: ITM, ATM, and OTM.

What Is Moneyness in Options? And Why Does It Matter?

Moneyness describes the relationship between an option's strike price and the current market price of the underlying, which in the examples here is the Nifty 50 index. It tells you whether an option already has real, usable value if you exercised it right now (in the money), sits exactly at the current price (at the money), or carries only potential value with nothing yet banked (out of the money).

Every option you will ever look at on the NSE option chain, whether it is a Nifty CE (call) or a PE (put), sits in exactly one of these three categories at any given moment. That category tells you three things immediately: roughly how expensive the option is compared to other strikes on the same expiry, how likely it is to expire with any value at all, and how sensitively its premium will react to the next move in Nifty.

Moneyness is not background terminology you memorise once and move past. It is the lens every other options concept gets viewed through. Intrinsic value exists only where an option is ITM. Delta, one of the Option Greeks, behaves very differently depending on whether a strike is ITM, ATM, or OTM. Every strategy discussion you come across later assumes you can glance at a strike and place it in one of these three buckets without pausing to think.

ITM (In the Money): When Your Option Already Has Real Value

An option is in the money when exercising it right now, immediately, would put money in your pocket. The rule flips depending on whether you are looking at a call or a put, so both are worth stating clearly.

For a call option (CE), ITM means the strike sits below the current spot price. You hold the right to buy at a price lower than where the market currently is, and that right already has value.

For a put option (PE), ITM means the strike sits above the current spot price. You hold the right to sell at a price higher than where the market currently is, and that right already has value.

Take Nifty at 24,200 as the reference point for the examples in this article.

A 24,000 CE, the right to buy Nifty at 24,000 when the market trades at 24,200, is immediately useful. Exercising it means buying at 24,000 something currently worth 24,200, a gain of 200 points. This call is ITM, and that 200 points is what is called intrinsic value.

A 24,500 PE, the right to sell Nifty at 24,500 when the market trades at 24,200, is also immediately useful. Exercising it means selling at 24,500 something currently worth only 24,200, a gain of 300 points. This put is ITM.

Notice that in both rows, the premium is higher than the intrinsic value. That difference, ₹50 for the CE and ₹35 for the PE, is time value: the part of the premium that reflects the chance the option gains even more value before expiry.

ITM options are the most expensive strikes on the chain for a given expiry, because they already carry real, usable value on top of whatever time value remains. They also move more closely in step with Nifty itself. This is Delta at work, but the short version is that deep ITM options carry Delta approaching 1 for calls, or -1 for puts, meaning they track the underlying almost point for point.

ATM (At the Money): The Closest Strike to the Current Price

An option is at the money when its strike price equals, or sits closest to, the current spot price. Nifty moves continuously through the trading session, so it will rarely land exactly on a listed strike. In practice, "ATM" simply means the nearest strike NSE has listed to wherever Nifty happens to be.

With Nifty at 24,200, the 24,200 strike, on both the CE and PE side, is the ATM strike at that moment.

Because the outcome for an ATM option is genuinely uncertain, it could finish ITM or OTM depending on which way Nifty moves before expiry, its entire premium is time value, and that time value sits at its highest point across the whole chain. This is also why ATM options are usually the most heavily traded strikes on any given expiry, and why the ATM row is typically the one highlighted on NSE's option chain. It functions as the reference point everything else on the chain is measured against.

OTM (Out of the Money): When Your Option Has Possibility but No Current Value

An option is out of the money when exercising it right now would not make sense, since it would leave you worse off than simply transacting at the current market price.

For a call (CE), OTM means the strike sits above the current spot price.

For a put (PE), OTM means the strike sits below the current spot price.

With Nifty still at 24,200:

A 24,500 CE, the right to buy Nifty at 24,500 when the market is at 24,200, is not useful today. You can already buy at the lower market price, so exercising this option would mean paying more than necessary. This call is OTM.

A 23,900 PE, the right to sell Nifty at 23,900 when the market is at 24,200, is also not useful today. You can already sell at the higher market price, so exercising this option would mean accepting less than the market offers. This put is OTM.

OTM options carry zero intrinsic value. Every rupee of the premium is time value, essentially a bet that Nifty moves far enough, in the right direction, before expiry to bring the strike into the money. This is why OTM options are the cheapest strikes on the chain, and also why they carry the lowest probability of expiring with any value at all. Their Delta sits below 0.50, and the further OTM a strike is, the closer that Delta gets to zero.

Think of an OTM option as a lottery ticket. It costs little. It is possible to win big. Most of the time, though, it expires worthless, and that is not a flaw in the ticket, it is simply how the odds work. An OTM option is not a bad instrument because of this. It is a cheap way to take a position on a large move, provided you understand, going in, that the base rate of success is low.

Moneyness for Put Options: The Reverse of Calls

This is where beginners most often get tripped up, because the ITM and OTM logic flips depending on whether you are looking at a call or a put. Seeing both side by side helps.

This is not an inconsistency, it follows from one consistent test: would exercising this right make money right now? A call gives you the right to buy, so it is only worth exercising when the market sits above your strike, meaning you would be buying below the market price. A put gives you the right to sell, so it is only worth exercising when the market sits below your strike, meaning you would be selling above the market price. Apply that single test to any option you look at, call or put, and the correct category becomes obvious without needing to memorise the table above.

How Moneyness Affects Premium, Probability, and Risk

Bringing the three categories together shows what moneyness tells you in practical terms.

For the same expiry, a 23,000 CE with Nifty at 24,200 costs far more than a 25,000 CE, because the first is deep ITM and already carries over 1,000 points of intrinsic value, while the second is deep OTM and carries none.

How Moneyness Changes as the Underlying Moves

Moneyness is not a fixed label glued to a strike. It shifts continuously, every time Nifty moves, because moneyness describes a relationship between a fixed strike and a constantly moving spot price.

Say you buy a 24,500 CE when Nifty is at 24,200. At that moment it is 300 points OTM, carrying zero intrinsic value and a premium of roughly ₹20 per unit, about ₹1,300 for one lot of 65 units.

Now say Nifty rallies to 24,600. Your 24,500 CE is now ITM. It carries intrinsic value of 100 points, and its premium rises to reflect that, to somewhere around ₹115 per unit, roughly ₹7,475 for the lot.

If Nifty then pulls back to 24,300, your 24,500 CE moves back to OTM. Intrinsic value returns to zero. But notice the premium does not fall all the way back to where it started. With the strike only 200 points away from spot instead of the original 300, the option carries more time value than it did before, perhaps around ₹35 per unit, about ₹2,275 for the lot. Proximity to the strike affects time value even while an option stays OTM.

Nothing about the contract itself changed through any of this. The strike stayed fixed at 24,500 the entire time. What changed was Nifty's position relative to that strike, and the option's moneyness, premium, and behaviour all recalibrated in response, tick by tick. This constant shifting is a large part of why premiums can feel unpredictable the first time you watch an option chain closely. The option is not behaving erratically. It is responding precisely to where the spot price sits relative to the strike at that moment.

How to Use Moneyness When Choosing a Strike to Trade

Moneyness gives you a practical framework for thinking about which strike fits a given view, rather than picking one at random because the premium looked affordable.

None of these is a universally correct choice. The right moneyness for a given trade depends on your view of the market, how confident you are in that view, and how much premium you are willing to pay for the right you are buying. What changes now is that the choice becomes a deliberate one. The next time you open the option chain, you will not just see a list of strikes and premiums sitting next to each other. You will see which ones already carry real value, which one sits exactly at the market, and which ones are priced purely on possibility, and you will know precisely why.