Method4 min read
Building a z-score screen that isn't just a bad-news detector
A naive oversold screen returns the week's worst headlines. Four filters turn it into a list of stretched prices — with the code and the reasoning for each.
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Market Notes2 min read
Breadth is narrowing while the index isn't
The index sits near its highs and the average stock inside it does not. That gap is where reversion candidates come from — and it is also how you get run over.
Method4 min read
The three ways a mean-reversion trade dies
High win rates hide the shape of the loss. Here are the three failure modes, what each one looks like on the way in, and the sizing arithmetic that survives them.