AIG to partner with specialty insurer Convex and asset manager Onex in $5 billion deal

American International Group (AIG) is making a strategic investment of nearly $5 billion into specialty insurer Convex Group and asset manager Onex Corporation, acquiring a 35% stake in Convex and a 9.9% stake in Onex, alongside a $2 billion commitment to Onex's investment funds. This multi-pronged deal, expected to close in H1 2026, is central to CEO Peter Zaffino's strategy to transform AIG into a more agile, capital-aligned entity by leveraging Convex's strong profitability and high-return specialty insurance focus. The investment, which also includes a potential quota share reinsurance agreement, underscores AIG's ongoing financial turnaround under Zaffino's leadership following recent strong earnings.

Analysis

American International Group (AIG) is making a strategic investment of nearly $5 billion into specialty insurer Convex Group and asset manager Onex Corporation, a move central to CEO Peter Zaffino's drive to transform AIG into a more agile, capital-aligned entity. This multi-pronged deal, which includes an initial $3 billion commitment followed by an additional $2 billion over three years, is currently under regulatory review and is anticipated to close in the first half of 2026. This follows a separate $2 billion acquisition deal with Everest Group, signaling AIG's aggressive repositioning.

The initial phase of the Convex deal involves a $2.2 billion commitment for a 35% stake in Convex Group, a specialty insurer demonstrating exceptional performance with an 87.6% combined ratio, nine percentage points better than the U.S. P&C industry average, and a 17% return on equity. Additionally, AIG will invest approximately $640 million for a 9.9% stake in Onex, Convex's majority shareholder, leveraging Convex's rapid growth to over $5 billion in premiums and a 16% year-over-year increase in shareholder equity to $3.67 billion.

Beyond equity stakes, AIG is negotiating a "whole-account quota share reinsurance agreement" with Convex to capture underwriting profits, and will deploy $2 billion into Onex's investment funds over three years for preferred access to high-return platforms. These initiatives align with Zaffino's broader revitalization efforts, which have seen AIG report a $1.1 billion profit in Q2 2025, reversing a $4 billion loss a year prior, with adjusted after-tax income rising 56% year-over-year and EPS of $1.81 beating forecasts.

Key Decisions for Investors

• Investors should assess AIG's enhanced strategic positioning and potential for improved capital efficiency following this significant investment in high-performing specialty insurance and asset management.
• Monitor the regulatory approval timeline and the successful execution of the quota share reinsurance agreement, which could further boost AIG's underwriting profitability.
• Consider AIG's continued financial turnaround under Zaffino, evidenced by recent strong earnings, but remain attentive to integration risks and the long-term realization of synergies from these complex transactions.