Understand option premium, moneyness, intrinsic versus time value, and the Greek sensitivities that explain how option prices change.
Option pricing terminology and Greeks appears in the official CIRO Derivatives Exam syllabus as part of Derivative pricing. Questions here usually test whether you understand what part of the premium is already earned, what part is still optionality, and which sensitivity explains the next price change.
An option premium contains both current value and remaining possibility. That is why the exam separates intrinsic value from time value. Intrinsic value tells you what the option is worth if exercised immediately. Time value tells you what the market is still willing to pay for uncertainty before expiry.
For calls and puts:
$$ \text{Call intrinsic value} = \max(0, S - K) $$
$$ \text{Put intrinsic value} = \max(0, K - S) $$
$$ \text{Time value} = \text{Premium} - \text{Intrinsic value} $$
If the option is far out of the money, intrinsic value may be zero and the entire premium is time value. If expiry is near, time value often shrinks quickly, especially when the option is not moving decisively in the money.
The Greeks are best understood as exposure labels:
| Greek | What it measures | Practical reading |
|---|---|---|
| Delta | Sensitivity to a small move in the underlying | How directional the option is right now |
| Gamma | Change in delta as the underlying moves | How quickly directional exposure can change |
| Theta | Sensitivity to time passing | How much value decay hurts if nothing else changes |
| Vega | Sensitivity to implied volatility | How much the premium reacts when expected volatility changes |
| Rho | Sensitivity to interest rates | Usually a smaller driver, but still part of the pricing map |
The exam often rewards the answer that chooses the dominant Greek instead of trying to say all Greeks matter equally. For example, a question about time decay should point you toward theta. A question about the effect of a volatility shock should point you toward vega.
Candidates also need to connect moneyness to option behaviour. Near-the-money options often carry the greatest time value because small price moves can materially change exercise value. Deep in-the-money options behave more like the underlying. Deep out-of-the-money options may be cheap, but they also need a larger move to matter.
The stronger answer usually identifies whether the question is about current exercise value, remaining optionality, or price sensitivity. Once that is clear, the right Greek or premium component is normally much easier to identify.