American International Group, Inc. (AIG)

FY2025 net premiums written were approximately $26B, roughly flat as AIG deliberately shed underperforming business lines. This trails growing peers like AJG (+15%), Chubb (+8%), and even Hartford (+5%). AIG is prioritizing margin over growth, which is correct strategically but limits topline momentum.

AIG has ceded market share intentionally over the past 5 years as it exited unprofitable lines and reduced limits in volatile classes. The company is smaller but healthier. In the segments it retains (commercial property, casualty, financial lines), AIG remains a top-10 global insurer. Share stabilization, not growth, is the current objective.

AIG benefited from the hard P&C market of 2020-2024 which allowed price increases of 5-15% annually. However, the market is now softening in most lines, and AIG's ability to maintain rate adequacy will be tested. The company's historical tendency to undercut on price to chase volume is the key behavioral risk that the turnaround is supposed to have fixed.

AIG has modernized its technology stack and improved claims processing, but product innovation is not AIG's competitive advantage. The company competes on risk selection and pricing sophistication rather than novel products. Cyber insurance is a growth area where AIG has expertise but faces intense competition.

Commercial insurance switching costs are moderate — policies renew annually, and brokers actively shop the market. AIG's relationships with major brokers (Marsh, Aon, WTW) provide distribution access, but brokers place business with whichever insurer offers the best terms. Policy continuity and claims handling reputation provide some stickiness.

Insurance has no meaningful network effects. AIG's global presence across 80+ countries provides breadth for multinational clients, but this is a geographic scope advantage rather than a network effect. The data advantage from decades of underwriting experience is valuable but not a self-reinforcing loop.

Insurance licenses across 80+ countries create meaningful barriers to entry. Regulatory capital requirements ensure that only well-capitalized entities can compete. However, AIG's regulatory history — including the government bailout — means regulators scrutinize AIG more closely than peers, creating compliance costs and potential constraints on risk-taking.

AIG's capital position has improved dramatically post-restructuring. The Corebridge deconsolidation reduced balance sheet complexity. Free cash flow generation is strong, enabling $5B+ in annual buybacks. The remaining P&C-focused business generates attractive ROEs when underwriting discipline holds. However, catastrophe exposure creates tail risk that can consume capital rapidly.

FY2026 estimates are stable as the turnaround improvements are now in run-rate and the P&C cycle softening creates offsetting headwinds. Catastrophe losses create quarterly volatility in estimates. The Street expects mid-teens ROE, which would be a good outcome but still below Chubb or Travelers.

AIG has successfully shifted its narrative from 'broken company' to 'turnaround story,' but the turnaround premium is fading as execution enters the maintenance phase. The Corebridge stake sale provides periodic positive headlines. Catastrophe events (hurricanes, wildfires) create negative sentiment spikes that disproportionately affect AIG given its historical association with risk.

CEO Peter Zaffino has executed the turnaround exceptionally well and deserves credit for the transformation. The capital return program is aggressive and well-timed. The question is whether Zaffino's successors will maintain discipline or revert to AIG's historical pattern of chasing growth at the expense of underwriting quality. Management quality is person-dependent, which is a risk.