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Santander acquires Tresmares Capital to boost growth in alternative asset management

Reported by Santander
Mar 3, 2025· 2 min read
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Key Takeaways
  • • Santander Asset Management acquired an 89.9% majority stake in Tresmares Capital, a Spanish alternative financing and private equity platform, with regulatory approval secured for the transaction.
  • • The acquisition targets over €8 billion in investment commitments within five years, positioning Santander to expand its alternative asset management capabilities across Europe.
  • • Borja Oyarzábal, Tresmares Capital's CEO, will continue leading the platform post-acquisition, ensuring continuity in management and strategy execution.
  • • The deal represents Santander's strategic push to strengthen its alternative investment offerings alongside its core wealth and asset management business.
Summary
Banco Santander has completed its acquisition of an 89.9% stake in Tresmares Capital, a Madrid-based alternative financing and private equity platform, following regulatory clearance. The transaction underscores Santander's commitment to expanding its presence in the alternative asset management sector, a high-growth segment within institutional investment markets.

Tresmares Capital operates as a selective portfolio investor in buyout and growth private equity strategies, focusing on experienced fund managers across multiple vintage years and geographies. The platform's business model—investing in leading PE funds rather than operating as a traditional GP—positions it as an attractive consolidation target for larger asset managers seeking diversified exposure to alternative strategies without incremental operational complexity.

Under Santander's ownership, Tresmares Capital aims to achieve more than €8 billion in investment commitments over a five-year horizon, substantially larger than its current asset base. The acquisition includes retention of existing management, with Oyarzábal remaining as CEO, a standard practice designed to preserve institutional knowledge and maintain relationships with existing fund partners. The integration strategy signals Santander's intention to leverage the platform's expertise while deploying additional capital to drive growth.

The deal also incorporates expansion plans across European markets, allowing Santander to offer its wealth management and institutional clients broader access to alternative strategies. This positioning aligns with industry trends where global banks increasingly build alternative asset capabilities to capture higher-margin fee income and deepen client relationships in high-net-worth and institutional segments.

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Sources

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Santander Santander acquires Tresmares Capital to boost growth in alternative asset management