About
Investing is a process. We built the memory for it.
The problem
Six months later, the reasoning fades.
You read the 10-Q. You form a view. You size the position. Then months pass — earnings, news, a dozen other names — and the reasoning fades. When the thesis is finally tested, you're reconstructing what you thought from memory and a few scattered notes.
The thing that actually compounds has nowhere to live: a structured, versioned record of how your conviction was built and why it moved. subThesis is the place for it.
Overview
5 positions · 117 research commits · last synced 2m ago
+1.38%
portfolio · today
The approach
Treat the thesis as a living document.
subThesis is an agentic research workspace. It tracks every version of your thinking, anchors every claim to a source, and puts your trades, thesis versions, earnings, and agent findings on one timeline. Agents run research tasks in the background, branch and stress-test scenarios in parallel, surface the gaps in your thesis, and keep company financials current — but you make the decisions.
The result is a workspace where research accumulates instead of evaporating — all of it stored as plain, open Markdown, so it stays portable and never locked into a proprietary format. Six months in, you have a structured archive of your thinking. Two years in, it's irreplaceable.
Your thinking is the asset
Not the tickers — the reasoning behind them. subThesis is built to preserve that reasoning, in full, over years.
Evidence over assertion
A claim without a source is a guess. Every belief in subThesis traces back to a filing, a transcript, or a note.
Append, never overwrite
The past version of your thesis is data, not clutter. We keep all of it, so you can always see what changed.
Tools assist, you decide
Agents do the legwork. They never make the call. The judgment stays yours, and the record shows it was yours.
Built for how you actually research.
subThesis is built to remember what you thought and why — your thesis, the evidence behind it, and how your conviction moved over time.
Private beta · by invitation