Tessera Alpha

Back in 2021 I got tired of stock screeners. They were either $200/month or borderline useless. So I built my own — a few Python scripts and a notebook I'd run every Sunday before Monday's trades.

I used it for myself for four years. Never thought about doing anything with it.

Then in December I got laid off.

Severance gave me about five months of runway. So I took the thing I'd been quietly using and turned it into something other people could use too.

That's tesseraalpha.com.

It scores every US stock weekly on 24 quality factors (Piotroski F-Score, ROIC, margins, momentum) and ranks them by P/E vs. their sector — finding undervalued companies relative to actual peers, not the broad market. Strategies are walk-forward backtested across 5 rolling time windows so you see real robustness, not cherry-picked numbers. Median Sharpe across windows: 1.23. Beat SPY in every window tested.

Same methodology I trusted with my own money for four years — just with a UI now. Here's an example of what a stock page looks like: tesseraalpha.com/stocks/NVDA

Free to start, no credit card. Would love brutal feedback.