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Options profit calculator
Profit and loss at expiry for one leg, long or short. This prices the position at expiration only, so there is no time value left in it, which is the figure worth checking before you open rather than the one you watch while it runs.
Doing this for one trade at a time adds up. TickerReplay runs the same arithmetic across every trade you have taken, rebuilt from your broker's fills.
Start freeOne contract is 100 shares. Premium is per share, as quoted. Nothing you type is sent anywhere; the maths runs in your browser.
How it works
At expiry an option is worth its intrinsic value and nothing else. A call is worth the underlying less the strike when that is positive, a put is worth the strike less the underlying, and both are worth zero otherwise.
A long position pays that intrinsic value and subtracts what you paid. A short position keeps what you received and subtracts what it has to pay out. Break-even sits one premium above the strike for a call and one below for a put.
A long call and a short put both have maximum losses that the words hide. The long call loses the whole debit, which is capped. The short call has no cap at all, which is why the figure reads unlimited rather than a number.
This covers one leg. A spread, a roll, or an assignment is several legs that belong together, and reading them one at a time is how a four-leg condor turns into four rows in a journal that does not understand them.
Common questions
Why does this only price expiry?
Because before expiry the value depends on implied volatility and time remaining, which are forecasts rather than arithmetic. Expiry is the one point where the payoff is fully determined by the underlying price.
What does unlimited mean here?
A short call has no upper bound on what the underlying can do, so there is no maximum loss to print. It is a real exposure, not a formatting choice.
Can it do spreads?
Not yet. Run each leg and add the results, remembering that the credit or debit is the net of all legs. TickerReplay itself keeps multi-leg positions whole, which is the part a calculator cannot do for you after the fact.
Stop doing this one trade at a time
TickerReplay rebuilds every trade from your broker's fills and keeps win rate, expectancy, R-multiples, and drawdown current, so the numbers come from your real executions rather than from a box you typed into.
Start free30 trades per rolling 30 days. No card, no trial.
SES Technology Ventures LLC. These tools are for arithmetic, not advice.