Option Strategy Builder

Combine calls, puts and the underlying into one position — and see the combined payoff, breakevens, Greeks and scenarios, live.

Why combine options at all?

A single option is a blunt instrument: a long call is "up, a lot, soon". Combining legs sculpts the payoff — cap what you'll pay, finance one option by selling another, profit from calm instead of direction, or insure a position you already own. Every classic strategy below is just addition: leg by leg, the payoffs sum into one combined curve. That summing is what this page's builder draws, live.

How to read the output

• The solid line is the combined payoff at expiry — every leg's profit and loss added up at each underlying price. Green shading: where the position makes money; red: where it loses.
• The thin yellow line is the position's model value today (Black–Scholes): before expiry, the position is worth time value too — this is why a position can be "winning" before the payoff diagram says so.
• Dots mark breakevens; the dashed faint lines are the individual legs, so you can see what each contributes. The ●-toggle on each leg removes it from the graph without deleting it — the fastest way to understand a structure is to switch its legs off and on.
• Net Greeks summarise the position's character: delta (direction), gamma (convexity), vega (vol exposure), theta (the daily time bill). A position with near-zero delta and negative theta is a bet on movement; positive theta and short gamma is a bet on calm.

The fourteen classics — a cheat sheet

• Long call / long put — pure direction with limited loss. Pays for the right, bleeds theta.
• Covered call — own the stock, sell the upside beyond a strike. Income in exchange for a cap; the retail wrapper is the discount certificate.
• Protective put — stock plus insurance. The floor costs premium; the upside stays.
• Bull call / bear put spread — direction with both entry cost and payoff capped. Cheaper than the naked option; the sold leg finances the bought one.
• Straddle / strangle — long both a call and a put: a bet on movement, either way. The premium is the market's implied move; you profit only beyond it.
• Iron condor / iron butterfly — sell a range (collect premium), buy wings for protection. Bets on calm; profits are capped at the credit, losses at the wing distance. The income trades of the options world.
• Long butterfly — a pin bet: maximum payoff if the underlying lands exactly at the middle strike.
• Collar — stock, financed floor, sold cap: the corporate hedger's default (see the worked FX example for the same structure on an invoice).
• Risk reversal — sell the put, buy the call (or reverse): directional exposure financed by the opposite tail; also the unit FX desks quote smiles in.
• Cash-secured short put — paid to promise buying lower; the engine inside reverse convertibles.

Three habits that separate study from gambling

• Always find the sold option: every income-generating structure sells optionality somewhere. Toggle legs off until you find which leg carries the tail risk — that leg is the price of the "income".
• Judge with the scenario table, not the best case: the table shows P&L at ±10% and ±20% today and at expiry — four numbers that expose what the payoff picture's happy region hides.
• Re-price before you believe: the premiums here are Black–Scholes at your chosen vol. Real quotes carry the smile — overwrite the premium fields with market prices and the breakevens update honestly.