Stock options probability calculator

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Estimate in-the-money odds and current vesting exposure for an employee option grant.

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Probability In The Money

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Enter current price, strike, volatility, and vesting stage to estimate the grant's probability profile.

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Example calculations

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Late-stage startup grant

$24 share price on a $12 strike

Useful when a grant is already comfortably in the money but liquidity timing is still uncertain.

Result: Healthy in-the-money odds with meaningful spread already on the vested portion

Underwater growth-company grant

$8 current price on a $10 strike

Shows how quickly equity planning changes when the common price slips below the grant price.

Result: Probability can still recover over time, but the current intrinsic spread is zero

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