Space stock and launch predictions with public track records

Members make dated, checkable calls on space stocks and launches. Price and launch calls resolve automatically, and every forecaster's hit rate and calibration are public.

Top forecasters

Forecasters appear after three resolved predictions.

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Make your own dated predictions and build a public track record. Create a free Martian Alpha account or sign in.

About the space market predictions

Members publish dated, checkable predictions on space stocks and rocket launches with a confidence level. Price targets resolve from daily closing prices and launch calls from launch results; predictions lock an hour after posting, so every track record is complete.

How are forecasters ranked?
By skill: how much better calibrated their confidence levels are than always saying 50% (based on the Brier score), weighted toward longer records. Members need three resolved predictions to appear.
Can a prediction be edited or deleted?
Only within an hour of posting. After that it stays on the record whether it comes true or not.

Data may be delayed. Not financial advice.