Grafton Street Partners Management Company, LLC Holdings Report (Q2 2026) — 13F Stock Portfolio

Grafton Street Partners Management Company, LLC's disclosed holdings carry a Herfindahl concentration index of 0.127 — mathematically equivalent to about 8 equally-sized positions, close to its 10 actual disclosed holdings. Value is spread relatively evenly across the portfolio rather than concentrated in a handful of names.

Position sizes are fairly uniform across the portfolio (a coefficient of variation of 0.55), suggesting a disciplined, rules-based approach to how much capital goes into each idea.

Recent activity leans toward adding more aggressively to already-large existing positions than to newly initiated ones (a 6.7 percentage-point tilt) — a pattern consistent with a momentum-following approach.