Options profit calculator: what happens at expiry?
Being right about the direction isn't enough — it has to happen in time. See your break-even, your worst case, and the result at every price on expiry day.
| Stock price at expiry | Result |
|---|
How it works: at expiry, a call is worth max(price − strike, 0) and a put max(strike − price, 0), per share, × 100 per contract. Your result = that value − the premium you paid. This shows expiry only; before expiry, prices also depend on time left and volatility. Fees left out.
The row most beginners skip
Look at how many rows end at the full premium lost. If the stock doesn't move past your break-even by expiry, the whole premium can go — even if you were "right" about the direction, just too slowly. Buyers risk only the premium; sellers can risk far more. Learn the basics first in options trading basics, and size any trade so the worst case is a loss you chose — see how much to risk per trade.
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