Options risk disclosure: Options involve risk and are not suitable for all investors. Before buying or selling options, read the OCC’s Characteristics and Risks of Standardized Options (the Options Disclosure Document). Not financial advice. This is education, not a recommendation to buy or sell any security. Past performance does not indicate future results.
Disclosure: Education only, not financial advice, not a broker. 360Trader does not execute trades or hold client funds.
Time decay is the bill you pay for holding an option. On weeklys that bill comes due fast. Here’s how it works.
What is time decay?
Options lose value as expiration approaches, a concept known as time decay (Vanguard). The Greek letter theta measures it.
Why decay speeds up near expiry
The curve isn’t straight
“Time decay, or theta, accelerates as expiration approaches” (Schwab). Cboe: “daily time decay is higher as expiration approaches” (Cboe).
Weeklys live at the steep end
Weeklys have a shorter life, so they spend most of it near expiry (Cboe).
Who theta hurts and who it helps
Buyers
“Time can work against you” as a holder (Vanguard). Being right on direction isn’t enough: “you can still lose money if the move doesn’t happen quickly enough” (Vanguard).
Sellers
Time decay can work for sellers (Vanguard; Schwab), but sellers can face much larger losses, and uncovered calls are theoretically unlimited (FINRA).
Theta’s partner: gamma
Weeklys have higher gamma, so small moves in the underlying can swing the option’s price a lot, “large gains or losses within a few days—or a few hours” (Cboe). Theta and gamma together are why weeklys need close monitoring (Schwab).
What happens at expiration
If a bought option expires out of the money, the entire premium is lost (Investor.gov). Investor.gov’s example: a $70 call bought for $2.20 ($220) with the stock at $65 at expiry is a 100% loss (Investor.gov).
Practical takeaways
- Have your exit plan before you get in. When you’re the buyer, time is working against you.
- Size as if the premium could go to zero (see our options position sizing guide).
- Watch event risk. Events can quickly turn gains into losses (Schwab).
- Check liquidity so you can actually exit (Vanguard).
Use the free 360 Options Academy payoff chart to see how a position’s value and worst case look before you trade.
Where Stock Slayer fits
360 Elite Stock Market Slayer is where I post 1–2 weekly options trades a week, same- or next-week expiry, so theta matters on every one. Some lose. Some expire worthless for a 100% loss. Nobody here promises profits.
Related guides
- Weekly options explained
- Buying calls vs puts
- Position sizing for options
- How to read an options trade alert
FAQ
What is theta in options?
The measure of time decay, the loss of option value as expiration approaches (Vanguard).
Why do weekly options decay faster?
Decay accelerates as expiration nears, and weeklys are always close to expiry (Schwab; Cboe).
Can I lose money on an option even if the stock moves my way?
Yes, if the move doesn’t happen quickly enough (Vanguard).
Risk disclaimer: Education only, not financial advice, not a broker, and not a recommendation. Options involve risk and are not suitable for all investors. Read the OCC Options Disclosure Document before trading. Bought options can expire worthless (100% loss of premium); some sold options carry unlimited loss. Past performance does not indicate future results.
Education only. This is not financial advice and 360Trader is not a broker or an investment adviser. Nothing here is a recommendation to buy or sell anything. Trading involves risk, including the loss of your whole position.