AIG finalises minority stakes in Convex and Onex

American International Group (AIG) has completed minority investments in Convex Group and Onex Corporation, concluding transactions announced in October. Under the agreements, AIG bought roughly 35% of Convex for about $2.1bn and acquired a 9.9% holding in Onex for approximately $642m. The Convex deal leaves Onex as majority owner with a 63% interest. From 1 January 2026, AIG began taking part in a whole account quota share of Convex’s underwriting portfolio, with plans to expand the volume ceded durin ...