LEAPS Theta and Vega - Why Long-Dated Options Behave Differently
Reviewed by Leon Moyer - Published October 9, 2026 - Last reviewed October 9, 2026
In this lesson
Compare the theta, vega and rho of a one-year option with a one-month option, and estimate how much each loses to time passing or to a drop in implied volatility.
LEAPS lose value to time slowly, but they are far more sensitive to implied volatility than short-dated options. With a year or more to expiration, a long-dated option's daily time decay (theta) is a small fraction of its price, while its sensitivity to implied volatility (vega) and to interest rates (rho) is several times larger than a one-month option's at the same strike.
These sensitivities are called the Greeks. Each one estimates how an option's price changes when one input moves and everything else stays fixed. Implied volatility is the volatility the market is pricing into an option, a measure of how much it expects the stock to move. LEAPS are listed options with more than nine months to expiration. The figures below come from the Black-Scholes model in the free OptionsPro profit calculator, with XYZ (a fictional stock) at $50, 30% implied volatility and a 4.5% interest rate.
Do LEAPS options decay slower?
Yes, per day and as a share of their price. Compare the same XYZ 50 call with 30 days left and with 365 days left:
A one-year call decays slower and reacts more to volatility
Theta: value lost per day (per contract)
Vega: value change per 1 point of implied volatility
The one-month call costs $181 and loses about $3.16 a day, roughly 1.7% of its value every day. The one-year call costs $700 and loses about $1.08 a day, roughly 0.15% of its value. A one-month option is mostly a race against the clock; a one-year option barely notices a single day.
Slow decay does not mean no decay. Theta grows as expiration nears, so the same LEAPS loses value slowly at first and quickly at the end.
Worked example
LEAPS decay example: holding a one-year XYZ 50 call
You buy the XYZ 50 call with 365 days left for $7.00, or $700. Assume XYZ stays at exactly $50 and implied volatility stays at 30% the whole time.
The first three months cost about $1.15 a day. The last month costs about $6.03 a day. Over the first six months the call keeps about two-thirds of its value; in the final three months it loses everything that is left.
Illustrative and hypothetical. The ticker and prices are invented for teaching, and the figures exclude commissions, fees, margin interest and taxes, which reduce real results. Past or hypothetical outcomes do not indicate future results.
A one-year at-the-money call loses its value slowly, then quickly
Value per contract by days left
This curve is why many LEAPS holders plan to sell or roll the position, closing it and buying a later expiration, while several months remain rather than holding into the steep part of the curve. It is a common habit, not a rule; what matters is that the exit is decided in advance. Managing a LEAPS Diagonal, later in this module, works through the cost of rolling a long-dated call.
Why is vega higher for LEAPS?
Vega is the dollar change in an option's price for a 1-point change in implied volatility. The longer the option has to live, the more a change in expected volatility compounds, so vega rises with time to expiration. In the example, the one-month 50 call has a vega of about $5.70 per contract and the one-year call about $19.07, more than three times as much.
That is the hidden risk of LEAPS. A one-year call barely cares about one day passing, but it cares a great deal about implied volatility falling.
The same 10-point drop in implied volatility, short-dated vs long-dated
30 days left: value per contract
365 days left: value per contract
If implied volatility falls from 30% to 20% with nothing else changing, the one-month call drops from $181 to $124, a $57 loss. The one-year call drops from $700 to $509, a $191 loss. That $191 is more than 170 days of the one-year call's current theta of $1.08 a day, and the stock never moved. Buying LEAPS when implied volatility is unusually high means paying for volatility that may not last.
The figures above reprice each option with one implied volatility for every strike and expiration. Real implied volatility differs by strike and expiration, and the implied volatilities of different expirations do not always move by the same amount, so treat the 10-point drop as an illustration of sensitivity, not a forecast.
How do interest rates affect LEAPS?
Rho is the change in an option's price for a 1-point change in interest rates. For a one-month option it is almost irrelevant: the one-month 50 call's rho is about $2.05 per contract. For the one-year call it is about $23.90. Higher rates make calls more expensive and puts cheaper, because buying a call instead of the shares delays paying the strike, and that delay is worth more when cash earns more. Over a year or two, a change in rates is a real input to a LEAPS price.
What about delta on LEAPS?
The one-year at-the-money call has a delta of about 0.62, higher than the one-month call's 0.53. In the model, an at-the-money call's delta rises with time to expiration, so a LEAPS behaves a little more like the stock. Deep in-the-money LEAPS go further: LEAPS Stock Replacement uses a one-year 40 call with a delta of about 0.85.
You can open the one-year XYZ 50 call in the free OptionsPro profit calculator and change the days or the implied volatility to see theta and vega move.
Check your understanding
The one-year XYZ 50 call has a theta of about -$1.08 per contract. About how much would it lose over 10 days if nothing else changed?
Show answer
About $11, or $1.08 x 10. That is a first-order estimate; theta itself changes slowly as time passes, so a longer stretch needs repricing.
The same call has a vega of about $19.07. Implied volatility rises from 30% to 32%. About how much does the call gain?
Show answer
About $38 per contract, or $19.07 x 2, if nothing else changes.
Why can a LEAPS buyer lose money even if the stock does not move and only a week passes?
Show answer
Because of vega, if implied volatility falls. A fall in implied volatility can cost a long-dated option far more than a week of time decay. In the example, a 10-point drop costs the one-year call $191.
Key takeaways
- LEAPS decay slowly at first: in the example, $1.08 a day for a one-year call against $3.16 for a one-month call at the same strike.
- Decay speeds up as expiration approaches, so plan an exit before the final months.
- Vega is much higher for LEAPS: a 10-point drop in implied volatility costs the one-year call $191 against $57 for the one-month call.
- Rho matters over long horizons: higher rates raise call prices and lower put prices.
- Long-dated at-the-money calls have slightly higher delta than short-dated ones.
Common questions
Do LEAPS have theta decay?
Yes, but slowly at first. In this lesson's example a one-year at-the-money call loses about $1.08 a day per contract, against $3.16 a day for the same strike with 30 days left. Decay speeds up as expiration approaches, so a LEAPS held to its final months decays like any other option.
Why do LEAPS have higher vega?
Vega measures how much an option's price changes for a 1-point change in implied volatility, and the effect builds with time. Over a year there is far more room for volatility to matter, so a one-year at-the-money call here has a vega of about $19 per contract against about $5.70 for a one-month call.
When should you sell a LEAPS option?
There is no fixed rule. Many holders close or roll with several months left, before decay speeds up and before the option loses its margin loan value at nine months. Your plan should set the exit in advance.
Does interest rate affect LEAPS prices?
More than it affects short-dated options. Rho measures the change for a 1-point move in interest rates. In this lesson's example the one-year call's rho is about $23.90 per contract, against about $2.05 for the one-month call.