OpenWealthLab OPENWEALTHLAB
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OpenWealthLab

Real money. Real data. No bullshit.

OpenWealthLab is a public, data-driven wealth-tech lab. This site documents real portfolio actions, dividends, build progress, and experiments.

The Idea

I'm heinzer. 42. From Hamburg. I've been doing AI, data, and investing for 15+ years.

This lab is built on a simple idea: treat my portfolio like a machine learning problem. Not opinions. Not narratives. Just data, probabilities, and systems.

All posts here are generated from my actual transactions, dividends, and notes — structured data turned into narratives.

Read my full story →

Explore

Latest stuff

Fresh from the lab — no curation, just chronology.

Build Log Build Log 2026-04-23

Build Log 001: Zero-Budget Stack – Architekturentscheidungen eines Hobby-Projekts Build Log 001: Zero-Budget Stack – Architecture Decisions for a Hobby Project

Warum der Stack kostenlos (oder fast) ist, wie Cloudflare Pages Functions ohne npm-Abhängigkeiten mit Firestore reden, und was das alles mit dem Dividenden-Report zu tun hat. Why the stack is free (or nearly so), how Cloudflare Pages Functions talk to Firestore without npm dependencies, and what any of this has to do with the dividend report.

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