Proyecto Brena Market notebook · Phase 0

Building in public

I'm building an agent
to try to beat the S&P 500.

This is the public notebook of how I build it: an agent that combines markets, fundamentals, geopolitics, and investor sentiment to propose a real portfolio. I explain every decision here before I make it.

Methodology

Two environments, one analysis

I read every asset through two lenses that I later combine to reach a target price and a probability. Exactly how I'll combine them is still being defined (I'll explain it in Phase 1), but these are the two starting lenses:

Economic

Geopolitics, macro, and fundamentals

The terrain: the global landscape, central banks, and each company's fundamentals, which I calculate myself from their original annual reports, never from third parties.

Human

The market's mood

Crowd psychology: euphoria, fear, panic, FOMO. I cross it with what's said in forums, social media, and public analysis, without taking it as absolute truth.

Economic · being defined × Human · being defined

The path

Five phases, each closed before the next opens

Phase 0 — The website

I'm building this very site: the public throughline of the whole project. In progress.

Phase 1 — Context

I study letters from great investors and market literature to build my own judgment.

Phase 2 — Testing

I test each capability separately, then all together.

Phase 3 — Demo

I operate with real data and markets, with a still-simulated portfolio.

Final Phase — Live

Real portfolio. The agent only recommends; I execute every trade myself.