Extrinsic value

Extrinsic value is the portion of an option's premium above its intrinsic value. It represents the market's compensation for the possibility that the option could become more valuable before expiration. All options have extrinsic value until expiry. OTM options are 100% extrinsic value.

Formula: Extrinsic value = Total premium − Intrinsic value

Two drivers of extrinsic value:

• Time value: More time to expiry = more extrinsic value. The stock has more time to make a favorable move.
• Implied volatility premium: Higher IV = more extrinsic value. Greater expected movement inflates the probability of the option becoming valuable.

Extrinsic value decays to zero: By expiration, all extrinsic value is gone. The option is worth exactly its intrinsic value (if ITM) or zero (if OTM). This erosion is theta decay.

Why sellers target extrinsic value: When you sell an option, you collect the full premium, intrinsic + extrinsic. But intrinsic value can come back to bite you if the stock moves against you. The extrinsic value is the portion you're truly harvesting, it decays in your favor regardless of the stock's movement (as long as it doesn't move adversely past your strike).

Example: AAPL at $190. The $190 ATM call costs $5.00. Since it's ATM, it has zero intrinsic value. The full $5.00 is extrinsic value, time premium + IV premium, that decays toward zero by expiration.

Related terms: Intrinsic value, time value, theta, premium, IV rank, ATM

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