I graded my own ML option forecasts. Here's the Brier score.

In May I promised — out loud, on the internet, where people can screenshot you — that I'd grade Helium's published prob_itm forecasts when the June 2026 AAPL contracts expired. June 26 came. The contracts died.

Source: [Dev.to](https://dev.to/connerlambden/i-graded-my-own-ml-option-forecasts-heres-the-brier-score-20fp)