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There's a hedge fund built by anonymous data scientists - https://numer.ai

You can use ML to make money on encrypted stock data for free. Think Kaggle but the winning models are used to trade.

It looks like the feature set is fixed on numer.ai? If so everyone's probably developing mega ensembles (this is what netflix's competition ended up as, with teams merging because their models did better together). Compared to quantopia, where you're responsible for feature engineering too (though numer.ai is probably easier to get started, since model selection is imo the fun part).

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