Flexstone Partners Expands Private Markets Platform with Glouston Capital Acquisition — Natixis Investment Managers

Event summary

Flexstone Partners completed the acquisition of Glouston Capital Partners, a Boston-based private equity secondaries manager.
The deal brings Flexstone's total assets under management to over $15 billion across primary, co-investment, and secondary private equity strategies.
Glouston's investment team joins Flexstone, operating from Boston, with existing fund structures and mandates remaining unchanged.
Six Glouston partners become Managing Partners of Flexstone, reinforcing long-term alignment across the combined organization.

The big picture

The acquisition strengthens Flexstone's secondary market capabilities, particularly in the North American middle market, aligning with the broader industry trend of consolidation in private markets. With over $15 billion in AUM, Flexstone now offers a more diversified platform, positioning it to better serve institutional investors globally. The deal underscores the strategic importance of scaling private equity secondaries expertise in a competitive landscape.

What we're watching

Integration Challenges: How Flexstone will integrate Glouston's team and strategies while maintaining continuity for existing investors.
Market Positioning: Whether the combined platform can enhance Flexstone's competitive edge in the middle-market secondary space.
Growth Strategy: The pace at which Flexstone can leverage Glouston's relationships to expand its institutional investor base.