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One51
One51 was founded in 1991 as a family office structure, evolving into a multi-family office under CEO Alan Walsh.
One51
One51 was founded in 1991 as a family office structure, evolving into a multi-family office under CEO Alan Walsh. The firm's dual headquarters in Montreal and Dublin reflect its cross-Atlantic investor base, serving families with ties to both Canada and Ireland. Its strategy spans private credit, real estate, infrastructure, and hedge funds, with a tilt toward direct co-investments and managed fund programs. Known holdings have included investments in Irish infrastructure projects and Canadian real estate, though specific portfolio companies remain largely undisclosed. The firm targets North American and European markets. Team size has not been publicly disclosed. One51 maintains offices in Montreal and Dublin, and has been linked to charitable foundations for its constituent families. A recent operational event includes the 2023 expansion of its private credit team, per industry sources. One51's structural differentiator is its dual-region, multi-family model that pools capital from a defined network of families, enabling larger direct deals than any single family could pursue alone — a hybrid between a club deal platform and a traditional FO.
General information
Firm type
Multi Family Office
Year founded
1991
AUM
Undisclosed
Location
Region
North America
Country
Canada
City
Montreal
Corporate office
Montreal, Quebec, Canada
Additional offices
Dublin, Ireland
Principals
Alan Walsh
CEO
Sector focus
Frequently asked questions
Who runs investment decisions at One51?
CEO Alan Walsh oversees the firm's strategic direction and investment decisions. The firm operates with internal investment professionals across private credit, real estate, and other asset classes.
Is One51 structured as a single family office or does it operate more like a venture firm?
One51 is a multi-family office that serves a network of Canadian and Irish families, not a single family. It operates more like a club deal platform, pooling capital for direct investments and fund commitments.
What investment stages does One51 typically target?
One51 targets direct co-investments, managed fund programs, and private credit deals. It focuses on North American and European markets across private credit, real estate, infrastructure, and hedge funds.
Does One51 participate in fund commitments or only direct deals?
One51 employs a hybrid approach, combining direct co-investments with commitments to managed fund programs. This allows the firm to balance liquidity and control.
Where does the underlying wealth come from?
The underlying wealth originates from families with ties to Canada and Ireland. Specific wealth origins have not been publicly attributed to individual family names or business ventures.
How is One51 related to its constituent families?
One51 serves as a multi-family office, providing investment management, advisory, and administrative services to a defined network of families. It is not a registered advisor or a public entity.
Does One51 maintain philanthropic structures, and how are they separated?
The families associated with One51 are known to operate separate charitable foundations, but the firm itself does not publicly manage a dedicated philanthropic vehicle. Investment and philanthropic activities are handled independently.
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.
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