Binomial Tree American Option
Price American options using binomial tree methods. American options can be exercised at any time before expiration, requiring numerical methods like binomial trees.
Key Feature: Backward induction checks early exercise at each node: V(t) = max(intrinsic value, continuation value)
Use Cases:
- Price American equity options (most exchange-traded options)
- Value options on dividend-paying stocks (early exercise for calls)
- Price American put options (early exercise premium vs. European)
- Determine optimal exercise boundaries
Recommendation: Use n_steps ≥ 100 for production accuracy, ≥ 300 for high accuracy.
Tier: Standard (2 credits/request) [Tier: PRO, Credits: 5]
Authorizations
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Body
Current price of the underlying asset
100
Strike price of the option
105
Risk-free interest rate (annualized, decimal format)
0.05
Annualized volatility (decimal format)
0.25
Time to expiration in years
1
Continuous dividend yield (annualized, decimal format)
0.02
Number of time steps in the binomial tree
100
Type of option
call, put "call"
Binomial tree method: CRR (Cox-Ross-Rubinstein), JR (Jarrow-Rudd), LR (Leisen-Reimer), TIAN (Tian)
CRR, JR, LR, TIAN "CRR"
