Assemble a position from individual legs and see its shape at once: the most you can make, the most you can lose (known in advance), where the breakevens sit. Two P&L curves — now and at expiry — with time and volatility sliders. Everything is computed in your browser, nothing goes anywhere. Strikes, expiries and premiums are live: pulled automatically from Deribit, the largest crypto options exchange, so you build the position at real prices rather than textbook examples. Deribit is our partner: signing up through this link gets you −10% off fees; it does not affect the calculations.
An educational risk-visualisation tool. Not investment advice, not order execution. Calculations are model-based (Black-Scholes, r=0).
Delta (Δ)
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direction: how far the P&L moves per $1 move in the asset
Gamma (Γ)
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how fast Delta changes (per $1)
Theta (Θ) / day
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value decay per day ($)
Vega (ν) / 1% IV
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sensitivity to +1 point of volatility ($)