This is the one that makes people quit options. The stock went up. The call expired worthless. Nothing was broken — the trade needed three things to go right and only got one.
Direction is one of three
Buying a call is not a bet that the stock goes up. It is a bet that it goes up far enough, before a deadline, and past a line most people never work out.
- Direction. Up, for a call.
- Distance. Past the strike, and then past the premium you paid on top.
- Deadline. All of it before expiry, because the option stops existing.
The line nobody calculates
break-even = strike + premium paid (for a call)
break-even = strike - premium paid (for a put)Stock at $100. You buy the $105 call for $2.00. One US contract covers 100 shares, so that is $200 out of your account. Your break-even is not $100 and it is not $105 — it is $107.
| Stock at expiry | Call is worth | Your P/L |
|---|---|---|
| $104 | $0.00 | −$200 — right direction, total loss |
| $106 | $1.00 | −$100 — past the strike, still red |
| $107 | $2.00 | $0 — break-even |
| $110 | $5.00 | +$300 |
At $104 the stock moved 4% your way and the option paid nothing, because below $105 a $105 call is worth exactly zero at expiry. That is not a glitch. That is the contract.
The deadline charges rent
An option loses value every day just from time passing, and it does not bleed evenly — it accelerates as expiry gets close. A rough picture for an at-the-money 30-day option bought at $2.00:
| Days left | Roughly worth |
|---|---|
| 30 | $2.00 |
| 15 | $1.41 |
| 7 | $0.97 |
| 1 | $0.37 |
Half the time gone, only about 30% of the premium gone. Then the last week takes 62% of whatever was left. This is a mental model for the shape, not a pricing model — real decay depends on how far the strike sits from the stock and on volatility. The shape is the part worth remembering: cheap weekly options are cheap because the clock is almost out.
The other side of the trade
Someone sold you that call. When you sell instead of buy, the maths flips: you are paid the premium the day you open, and time decay now works for you. In exchange you take on an obligation, and your worst case is no longer limited to what you paid.
Selling is not advanced-mode buying. It is a different trade with a different risk shape, and brokers gate it behind approval levels for that reason. Learn what you are promising before you collect anything for promising it.
Before the next one
- Write the break-even on the ticket. If the move it needs sounds unreasonable, it is.
- Check the date. An option that needs three weeks of work and has five days left is not a cheap trade, it is a short one.
- Know the worst case in currency. For a bought call it is the premium. For anything you sell, work it out before you open it.
The free 360 Options Academy covers calls, puts and the selling side in plain English, with a live payoff chart and a practice ticket. Nothing to buy, no email needed.
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.