Free · Every Sunday Morning
The Weekly Codex
Where Knowledge Compounds
A free Sunday morning newsletter for investors who think in decades, not days. One principle. One framework. One idea worth keeping.
What serious investors read each Sunday
An edge most investors never develop
The mental models that separate exceptional investors from average ones are not secret — they are just rarely explained with enough depth to actually change how you think. That is what every issue tries to do.
Nothing worth knowing gets missed
If a powerful investing idea was published that week — a framework, a principle, a mental model — it is in that Sunday's issue, distilled to its essence. You stay current without the chase.
Arrive at the week already thinking
Five ideas coming in the week ahead, with the thinker behind each one. Serious investors do not react to content — they arrive prepared to engage with it.
One line that reframes what you thought you knew
Each issue closes with a quote from an investor whose results validate their thinking. Not inspiration — evidence. The kind that makes you sit with an idea you thought was already settled.
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