Research for investors who outgrew the index.

Notes on value investing, market cycles, and the trades behind our live portfolio. Written for people who want to know why a stock is in the book, without taking on stock research as a second job.

Education21 posts →

How to value a business, size a portfolio, and read research without getting fooled by it.

Strategy5 posts →

What it takes to beat the S&P 500 as a long-term investor, and how our process tries to do it.

Research6 posts →

Company work, screens, and the signals we test before trusting them.

Markets4 posts →

Macro, sectors, and themes that move the stocks we follow.

Performance1 posts →

How our live book is doing, written up in full, losers included.

EducationPortfolio construction · Oct 10, 2026 · 7 min read

Building Concentrated Stock Portfolios Well

Building concentrated stock portfolios requires more than conviction. Learn how to size positions, test theses, and manage risk with discipline over time.

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