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Billionaire Partners Group (PGHN SW) Founder Moves to Split Family Office

Reported by Bloomberg
Jun 14, 2026· 2 min read
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Key Takeaways
  • • Urs Wietlisbach, one of three billionaire founders of Swiss private equity firm Partners Group Holding AG, is carving out an independent unit within PG3 AG, the family office that has managed the founders' combined wealth since 2013.
  • • The restructuring is described as an early sign of Wietlisbach's succession planning, according to people familiar with the matter cited by Bloomberg.
  • • Jascha Forster, current chief investment officer of Thomas Schmidheiny's family office Spectrum Value Management Ltd, will lead the new independent entity.
  • • Coverage reported by Yahoo Finance linked the family office move to a 30% drop in Partners Group shares, though the supplemental sources do not detail the share move's cause.
Summary
Urs Wietlisbach, one of the three billionaire founders of Swiss private equity firm Partners Group Holding AG, is carving out an independent unit within PG3 AG, the family office that has managed the founders' combined fortunes for more than a decade, according to Bloomberg. The move is described by people familiar with the matter as an early sign of the executive's succession planning, and sources indicate it represents the first material shift in the platform's governance structure.

The new entity will be led by Jascha Forster, currently chief investment officer of Spectrum Value Management Ltd, the family office of Swiss billionaire Thomas Schmidheiny, according to people familiar with the matter. Bloomberg's reporting characterizes the restructuring as a split of a shared structure into separate ones, each intended to outlast the founder who created it.

Yahoo Finance reported in a headline that Partners Group shares dropped 30% alongside the founder's move, describing the firm as entering a more delicate chapter. The supplemental material available does not establish a causal link between the family office restructuring and the share decline, and the figure should be read as reported by that outlet rather than confirmed here.

The full Bloomberg article could not be retrieved, so details on deal terms, asset levels, and timing beyond the initial reporting are not available.

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Sources

1 outlet

AlphaMaven summarised this story from the reporting below. Each link opens the original article.

Bloomberg Billionaire Partners Group (PGHN SW) Founder Moves to Split Family Office