Moneyness: Where the Stock Sits Relative to Your Strike
Move the stock price through your strike and watch the labels (and the money) change.
Worth reading first: Calls and Puts, Side by Side
Course catalogue99 lessons
Moneyness answers one question, over and over: where is the stock right now compared with the strike? The answer keeps changing, and most of what an option does follows from it. Its price, its greeks, its odds of assignment.
Move the stock through the strike
Drag the stock price across the strike and watch the label change. The coloured band between the two markers is the intrinsic value appearing and disappearing.
Three states, one question
In the money means exercising the contract right now would be worth doing. A call is in the money when the stock is above the strike, a put when it is below. The contract has real value that nobody can argue with.
At the money means the stock is sitting on the strike. Nothing is decided yet, which is why an option here has the most time value, the most sensitivity to volatility, and the fastest decay. Later lessons come back to all three.
Out of the money means exercising would be pointless. The contract still has a price, because the stock still has time to move, but none of that price is intrinsic. This is where premium sellers spend most of their time.
| Strike | Call is… | Put is… | Call intrinsic | Put intrinsic |
|---|---|---|---|---|
| $85 | In the money | Out of the money | $15.00 | $0.00 |
| $95 | In the money | Out of the money | $5.00 | $0.00 |
| $100 | At the money | At the money | $0.00 | $0.00 |
| $110 | Out of the money | In the money | $0.00 | $10.00 |
A stock trading at $100. Same underlying, four different strikes, both contract types.
The table shows something worth noticing. A call and a put at the same strike are always in opposite states, by the same distance. They are two ways of looking at one relationship.
Moneyness creates intrinsic value
How far a contract is in the money, in dollars, is its intrinsic value. It is the part of the premium that would still be there if the stock froze and never moved again. An out-of-the-money option has none, so its whole price is time and expectation.
This is why a $2.00 premium can mean two different things. On an out-of-the-money contract, all $2.00 is time value on its way to nothing. On a deep in-the-money one, $1.90 might be intrinsic and only $0.10 at risk from the calendar. The next lesson takes that split apart.
Why premium sellers stay out of the money
A seller wants the contract to expire worthless, and that happens when it finishes out of the money. Every strike decision in this course is really a decision about how far out of the money to go, and how much premium to give up for the extra room.
Further out means a bigger cushion, better odds of expiring worthless, and less money. Closer in means more money and worse odds. There is no right answer, only consequences you can measure, which is what the strike selection lesson does with real numbers.
On the last day, moneyness decides who gets shares
At expiration, moneyness stops being a description and starts being a mechanism. Contracts that finish in the money by even a cent are usually exercised automatically. Contracts that finish out of the money expire and disappear. That is what decides whether a put seller wakes up owning 100 shares, and it is why the last hour gets tense when the stock is hanging around the strike.
Before expiration, a stock sitting right on the strike is the worst spot for a seller. Nothing is settled, and the position reacts hardest to every small move, which the gamma lesson covers.
What can go wrong
Reading “out of the money” as “safe”. It describes where two numbers sit today and nothing else. A stock can cover a lot of ground in a week.
Forgetting that moneyness moves. The strike is fixed. The stock is not. A comfortable position turns uncomfortable without you doing anything.
Expecting an in-the-money short option to be assigned straight away. Early assignment happens, but it is not automatic. Most holders do better selling the contract than exercising it early. Calls around an ex-dividend date are the exception.
Key takeaways
- Moneyness answers one question: where is the stock relative to the strike, right now?
- In the money means exercising would be worth doing. Out of the money means it would not.
- A call and a put at the same strike are always in opposite states, by the same distance.
- Only in-the-money contracts have intrinsic value. An out-of-the-money option is worth time and nothing else.
- Moneyness at expiration decides assignment. It does not decide profit; breakeven does.
Check your understanding
1. A stock trades at $47. Which contract is in the money?
2. An out-of-the-money option is quoted at $1.40. How much of that is intrinsic value?
3. You bought a $100 call for $3.00 and the stock finishes at $101.50. What happened?
Related lessons
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