American Put Option


[European Put Option](https://texonom.com/european-put-option-3ee3fbd106be4fa8990ce3bff6f0e31e) 보다 더 비쌈
![](https://www.notion.so/image/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2F1944e2ec-beba-4759-b56b-cfd6542a0fd7%2FUntitled.png?table=block&id=1749a35b-b927-42a4-84c4-dc88df8d6542&cache=v2)

### [2-Period Binomial Model](https://texonom.com/2-period-binomial-model-f981fc6867694a1c9cf332d74423b22f) 
시간에 따라 흘러가면서 모두 고려하여 최적의 선택을 내리므로 1일 때 행사가능
![](https://www.notion.so/image/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2F367eef5c-4e13-4b39-b923-6366225b1501%2FUntitled.png?table=block&id=69a77fba-e1ae-45af-8de9-9d5defaba237&cache=v2)
1.3 is 조기행사 프리미엄






