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### Get strikes from delta works with put but no with call function

If you have dividends, then $\Delta_C - \Delta_P = e^{-qt}$. As you note, you have $\Delta_C = e^{-qt}N(d_1)$ and $\Delta_P = e^{-qt}(N(d_1)-1)$. For both $\Delta_C$ and $\Delta_P$ you then get \$N(d_1)...
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### Option pricing Greeks in Python - incorrect Gamma with MC option pricing (Black) using AAD autograd / JAX libraries - but works with closed form?

I think the issues is because of the payoff function. You should replace the maximum() with HeavisideApprox(). Read this paper: https://papers.ssrn.com/sol3/papers.cfm?abstract_id=1626547 Here's the ...