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Hamilton Insurance Group
Hamilton Insurance Group was founded in 2013 by industry veteran Brian Duperreault, who returned to Bermuda after tenures leading ACE Limited and Marsh...
Hamilton Insurance Group
Hamilton Insurance Group was founded in 2013 by industry veteran Brian Duperreault, who returned to Bermuda after tenures leading ACE Limited and Marsh McLennan. The firm's launch drew attention for an anchor partnership with Two Sigma, the quantitative hedge fund, whose data-science team helped build Hamilton's underwriting platform from the ground up. That partnership established the firm's identity as a technology-native carrier rather than a legacy reinsurer adding analytics as an afterthought. Hamilton operates across three segments: international specialty insurance, Bermuda-based reinsurance, and a Lloyd's platform through its Syndicate 4000 managed by Hamilton Managing Agency. The firm writes property, casualty, and specialty lines including marine, energy, aviation, and cyber. In reinsurance, it deploys collateralized capacity through its Hamilton ILS platform alongside traditional treaty business. Confirmed portfolio exposure includes the Lloyd's market through the firm's 2019 acquisition of Pembroke Managing Agency and the subsequent integration of the Liberty Mutual Pembroke syndicate. The firm went public via an IPO on the New York Stock Exchange in November 2023 under ticker HG, raising approximately $265 million in gross proceeds (per the firm's S-1 filing, 2023). CEO Pina Albo, a former Munich Re executive, has led the company since 2018 while Duperreault serves as Executive Chairman. The public listing crystallized a governance structure that separates Hamilton's technology stack and underwriting engine from the legacy carrier model, with the Two Sigma partnership continuing through a services agreement. Structurally, Hamilton represents a distinct hybrid: a data-science company with an insurance license. Its underwriting platform, Attune, was developed jointly with Two Sigma and serves as both internal analytical engine and a potential product offering. The Lloyd's platform provides access to specialty markets across 200 territories, while the Bermuda reinsurance operation allows the firm to recycle capital efficiently. This architecture — public company transparency, hedge-fund analytics, and legacy market access — makes Hamilton a unique test case for whether quantitative rigor can sustainably improve the insurance industry's structurally challenged combined ratios.
General information
Firm type
Insurance
Year founded
2013
AUM
Undisclosed
Location
Region
North America
Country
Bermuda
City
Pembroke
Corporate office
Pembroke, Bermuda
Additional offices
Dublin, Ireland · London, United Kingdom
Principals
Pina Albo
Chief Executive Officer
Brian Duperreault
Executive Chairman
Sector focus
Frequently asked questions
Who runs investment decisions and underwriting at Hamilton?
CEO Pina Albo oversees the firm's underwriting strategy and operations, having joined in 2018 after executive roles at Munich Re. Executive Chairman Brian Duperreault, who founded Hamilton in 2013, remains involved in strategic direction. The firm's proprietary underwriting platform, Attune, integrates data-science models developed through Hamilton's partnership with Two Sigma, meaning algorithmic inputs influence underwriting decisions alongside human underwriters.
What is the relationship between Hamilton Insurance Group and Two Sigma?
Two Sigma was an anchor investor at Hamilton's 2013 launch and jointly developed the firm's Attune underwriting platform. Two Sigma's data-science team contributed quantitative modeling capabilities to Hamilton's insurance workflows. The relationship continued through a services agreement structured around the Attune platform, though Hamilton operates independently as a publicly traded company since its 2023 IPO.
How is Hamilton structured relative to traditional Bermuda reinsurers?
Hamilton departs from the legacy Bermuda model by building its underwriting engine around a data-science platform rather than purely relationship-driven book-building. The firm operates through three channels: a Bermuda-based reinsurer, a Lloyd's platform via Syndicate 4000, and a specialty insurance unit. Its public listing in November 2023 added a transparency layer unusual for a firm with hedge-fund DNA.
Does Hamilton participate in the Lloyd's market?
Yes. Hamilton acquired Pembroke Managing Agency in 2019 and subsequently gained control of Lloyd's Syndicate 4000, which had previously been managed by Liberty Mutual's Pembroke operation. This syndicate provides Hamilton with underwriting access across specialty lines in over 200 territories.
What lines of business does Hamilton underwrite?
Hamilton underwrites property, casualty, and specialty lines including marine, energy, aviation, cyber, and professional liability. Through its reinsurance division, the firm also deploys capacity in treaty reinsurance and collateralized reinsurance products via Hamilton ILS, its insurance-linked securities platform.
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