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13F managers

13F managers, scored on what they disclosed

Vestiio follows each 13F filing from the day it becomes public and scores managers on how consistently their disclosed books have done against other managers filing for the same quarter. Below are the five highest scores and a page for each of a set of well-known managers.

Ranking of 16 September 2026, covering 978 managers.

The five highest scores

A manager is ranked once it has at least 12 completed quarters with, on average, at least 80% of the book priced.

RankManagerScoreOne-year figureQuartersReported book
1Windacre Partnership LLCMedium confidence66.0+30.7%14$10.1 billion
2Fairmount Funds Management LLCMedium confidence65.0+208.4%15$1.5 billion
3Peconic Partners LLCHigh confidence64.0+68.0%20$8.0 billion
4Jackson Square Capital, LLCMedium confidence63.7+64.8%20$719.0 million
5Voyager Global Management LPMedium confidence63.5+29.9%17$3.6 billion

Scores estimate the reported equity book, followed from the day each filing became public. They do not measure a fund’s actual returns, since a 13F leaves out cash, short positions, private holdings and everything traded between filings. How the score works

The full ranking

Fund Explorer ranks every eligible manager and shows each one’s holdings, changes and score record, along with which of their holdings you already own.

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