Stocks · Options

Options Payoff Visualizer

Build a strategy from a preset or custom legs and see its profit/loss at expiration — break-evens, max gain, max loss. Everything is computed locally; premiums are theoretical and fully editable.

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What’s an option?

A contract giving you the right, not the obligation, to buy or sell a stock at a set price before a set date. You pay for that right.

Call vs put

A call is a bet the price goes up. A put is a bet it goes down.

Buy vs sell

Buy and you pay a premium — your loss is capped at what you paid. Sell and you collect the premium up front, but take on the risk if it moves against you.

Premium & contracts

The premium is the option’s price today, quoted per share. One contract covers 100 shares, so the cash is the premium ×100.

How to read this chart: left–right is the stock’s price; up is your profit, down is your loss. The solid line is the value at expiration; the dashed line is roughly its value today.

Quick glossary

Strike: the fixed price the option locks in.
Premium: the option’s price today, per share (×100 per contract).
Break-even: the stock price where you come out even at expiration.
Net premium: what you pay for the options minus what you collect, up front.
Max gain / loss: the best and worst outcomes at expiration.
Implied vol.: the size of swing the market expects, per year.
Prob. of profit: rough odds you finish in a profitable zone — an estimate.

Underlying & expiration

Spot price?The stock’s current price — where it’s trading right now.

Implied volatility?How big a swing the market expects from the stock over a year. Higher means bigger expected moves — and pricier options.

Days to expiration?How many days until the options expire and settle. Sooner means less time for the stock to move.

days

Strategy presets

Profit / Loss by underlying price

At expiration Today (theoretical)

Max gain?The most this strategy can make in the best case at expiration.

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Max loss?The most this strategy can lose in the worst case at expiration.

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Break-even?The stock price where you come out even at expiration — neither making nor losing money.

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Net premium?Everything you pay for the options minus everything you collect, up front. A debit costs you; a credit pays you.

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Prob. of profit ?Rough odds the stock finishes in a profitable zone at expiration, from a lognormal model at the current IV. An estimate, not a guarantee.

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Reward : Risk?How many dollars you could make for each dollar you’re risking. Higher is better.

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Legs

Side?Buy pays the premium, with your loss capped at what you paid. Sell collects the premium up front but takes on the risk if it moves against you.Type?A call profits if the stock rises; a put profits if it falls. Stock is 100 actual shares.Strike?The fixed price the option locks in — where you’d buy (call) or sell (put) the stock.Premium?The option’s price today, per share. One contract covers 100 shares, so the cash is this ×100.Qty

Educational — not investment advice. Premiums are theoretical (Black-Scholes) and fully editable; real market prices differ with bid/ask, dividends and skew. Options are ×100 shares per contract. No external data — everything here is computed in your browser.