FJ Research

FJ Research

How I Decide What to Buy Next

FJ Research's avatar
FJ Research
Nov 18, 2025
∙ Paid

Read this carefully. It is the core of my entire investment framework.

Before we get to the broader message, this is the part most investors skip and the part that actually drives long-term outperformance. If you want to understand how I allocate capital inside an ultra-concentrated portfolio, read on. This is the blueprint.

The Core Message

In the current volatile environment, attractive opportunities show up everywhere. Many names look cheap. Many charts look tempting. And it becomes dangerously easy to forget a simple truth: real diversification, in its original sense, barely exists anymore in public markets. Everything is indexed. Everything is correlated. When the market falls, almost everything falls together.

That is exactly why I do not chase every opportunity. I run a deliberately concentrated portfolio. Every position competes against every other position, every day. And when several names hit my buying zone at the same time, I never buy all of them. I buy the one where I see the highest asymmetric payoff and I size that bet properly. That is the FJ Research philosophy.

If you want to understand how I actually choose between multiple attractive opportunities, how I avoid spreading myself too thin, and how I decide which single idea deserves real size in my portfolio, continue reading below. This is the decision framework that shapes every move I make.

This post is for paid subscribers

Already a paid subscriber? Sign in
© 2025 FJ Research
Privacy ∙ Terms ∙ Collection notice
Start your SubstackGet the app
Substack is the home for great culture