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Concentration as a mechanism, not a style

18 September 2026 · CINCO³ Investment Team

Diversification protects a portfolio from being wrong. Concentration is how a portfolio becomes right at a scale that matters.

Most capital is allocated to avoid being embarrassed rather than to capture an exceptional outcome. The two goals are not the same, and the structures that achieve them are opposite.

When a small number of companies generate the majority of an index's return, the decision that matters is not which sectors to overweight. It is whether you own enough of the handful of businesses whose economics compound faster than the market expects.

That requires accepting idiosyncratic risk deliberately and governing it with research rather than with position limits alone.

  • conviction
  • portfolio construction