Thoughts of a mechanical engineer turned programmer turned statistical investor. Here to save you from making mistakes I made at the beginning of my investing career.

Tag: cash secured put


  • Portfolio margin explained

    Portfolio margin explained

    I got a question on this post about portfolio margin so I’ll dedicate a short post to how it works. Say I sell a $100 AAPL put. Thats a promise to buy 100 shares of AAPL for 100$, costing a total of 10,000$. I happened to sell such a put in my portfolio (as well […]

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