Primers
The foundations.
Before a verdict lands, the reader deserves the conceptual and empirical groundwork that justifies the rubric. Primers are the published meta-studies and methodological essays that every Nullberg verdict rests on. Every claim in a primer is sourced to a published paper with a live link.
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April 10, 2026
Four verdicts, four shapes: reading the first Nullberg data runs
The first primer argued that most published alpha does not replicate. The first four verdicts test that claim empirically on four different factor classes and produce four qualitatively different outcomes. This primer reads the patterns in them, separates what the data shows from what the mechanisms might be, and sets out what the archive will track next.
Read the primer
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April 10, 2026
The replication crisis in systematic investing
Three published meta-studies that anchor the entire reason Nullberg exists. Exact numbers, no paraphrasing, with links to every source.
Read the primer