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binomial-trees
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# Binomial Option Pricing
> CRR model, multi-step trees, American options, early exercise boundary, calibration, and convergence to BSM.
## When to Activate
- User pricing American options where closed-form solutions do not exist
- Teaching or explaining option pricing intuition through discrete models
- Pricing options with discrete dividends or complex exercise features
- Calibrating tree parameters to match market prices
- Understanding early exercise boundaries for American puts and calls on dividend-paying stocks
- Validating other pricing methods (Monte Carlo, finite differences) against tree results
## Core Concepts
