Aflac U.S. earned $493 million of pretax adjusted earnings in the third quarter of 2026, about 34% of the $1,454 million made by Aflac’s two operating segments, by our arithmetic from its results release filed on 4 November. A year earlier the U.S. share was about 24%. Aflac Japan earned $961 million, against $1,216 million.
The U.S. rise was mostly accounting for future claims: the release says U.S. pretax adjusted earnings were “primarily driven by lower benefits from higher reserve remeasurement gains as a result of unlocking actuarial assumptions”.
Business Pill · Concentration
An evergreen Business Engineer explainer on concentration: what happens when one market or customer carries most of a business. It explains the general idea only and does not discuss Aflac.
The key insight: Aflac U.S. made about 34% of Aflac’s third-quarter segment pretax adjusted earnings, up from about 24%, by our arithmetic, as its reserve-assumption unlock lifted U.S. earnings to $493 million while Aflac Japan fell to $961 million from $1,216 million.
Once a year insurers like Aflac update, or unlock, the assumptions behind their reserves, the money set aside for future claims. In the CFO video update, Max K. Brodén said remeasurement gains from the unlock totalled $447 million pretax and that “The total net impact from the Q3 assumption update increased earnings per share by $0.71”. That is about 29% of adjusted earnings per share of $2.43, by our arithmetic.
In the U.S. the benefit ratio, claims per dollar of premium, was 40.7%, down 490 basis points; Brodén estimated it at 50.2% after adjusting for the remeasurement gains. U.S. net earned premiums rose 3.3% to $1,544 million and sales rose 3.5% to $403 million.
Japan had the larger unlock a year earlier. Its benefit ratio was 49.2%, up 990 basis points, “reflecting a larger actuarial assumption unlock in the prior year”, and 61.7% on Brodén’s adjusted estimate. Japan’s pretax adjusted earnings fell $255 million in dollars, by our arithmetic.
Pretax adjusted earnings by segment, third quarter 2025 vs 2026, from Aflac’s results release and CFO update filed on 4 November 2026. Aflac Japan $1,216 million to $961 million; Aflac U.S. $375 million to $493 million; Corporate and other $69 million to $72 million. The U.S. share is our arithmetic.
The Yen Effect
Aflac Japan reports in yen. Its net earned premiums fell 2.0% in yen and 9.3% in dollars, and its pretax adjusted earnings fell 15.2% in yen and 21.0% in dollars. The average rate was 158.49 yen per dollar, 6.8% weaker than 147.68 a year earlier; the release puts the effect on adjusted earnings per share at negative $0.03.
Premiums, Float and the Bond Book
A supplemental health insurer collects premiums years before it pays many claims and invests the money in between. Aflac held $100,433 million of investments and cash at 30 September. Japan’s adjusted net investment income rose 3.7% in yen to ¥101.6 billion.
Net earnings fell to $303 million, or $0.61 per share, from $1,639 million, mainly from net investment losses of $1.1 billion tied to repositioning the portfolio. Brodén said Aflac switched $2.3 billion of Japanese government bonds “to take advantage of what are the highest interest rates in a generation”. Adjusted earnings were $1,214 million, down 8.5%.
Aflac Japan ceded about ¥500 billion of cancer-policy reserves to Aflac Re Bermuda; Brodén said “We estimate that this transaction will release approximately $1 billion of capital”. Aflac returned $1,109 million in the quarter, $804 million in buybacks and $305 million in dividends, about 91% of adjusted earnings, by our arithmetic.
What Aflac Says About AI
The release and the CFO update do not mention artificial intelligence. Among the factors the CFO update lists as able to move results are “concentration of business in Japan” and “foreign currency fluctuations in the yen/dollar exchange rate”.
As we read the release, the shift is mostly timing: the annual assumption update landed harder in the U.S. this year and in Japan last year.
As we read the release and the CFO update, much of the quarter’s activity was on the balance sheet: the release shows $1.1 billion of net investment losses, including $842 million from sales and redemptions as the portfolio was repositioned, and the CFO update says moving about 500 billion yen of reserves to Bermuda will release about $1 billion of capital.
Max K. Brodén, Aflac Q3 2026 CFO video update, 4 November 2026
“The total net impact from the Q3 assumption update increased earnings per share by $0.71.”
Three Implications
FOR AFLAC U.S. Pretax adjusted earnings rose 31.5% to $493 million; Brodén estimated the U.S. benefit ratio at 50.2% after adjusting for remeasurement gains, against a reported 40.7%.
FOR AFLAC JAPAN Pretax adjusted earnings fell 15.2% in yen and 21.0% in dollars, with the yen 6.8% weaker on average than a year earlier.
FOR SHAREHOLDERS Aflac returned $1,109 million in the quarter, about 91% of adjusted earnings of $1,214 million, by our arithmetic.
The framework says of AI infrastructure spending: “It is a sovereign-scale financing problem dressed in tech-company clothing — and the financial architecture is starting to invert.”
As we read it, insurers sit on the other side of that financing: Aflac reports $100,433 million of investments and cash and says its private credit portfolios deliver strong risk-adjusted net yields. Aflac’s release and CFO update do not mention AI, and the framework does not discuss Aflac.
The 34% and 24% shares are our arithmetic and leave out the Corporate and other segment, which earned $72 million. Aflac’s Q3 Form 10-Q was not on EDGAR when we checked, so its risk-factor section is not reviewed here. The conference call is on 5 November and is not reflected here.
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Aflac U.S. made about 34% of segment pretax adjusted earnings in the third quarter, up from about 24%, by our arithmetic, mainly because its reserve assumptions were unlocked this year while Japan’s larger unlock fell a year earlier. A weaker yen cut Japan’s dollar results further. The assumption update added $0.71 to adjusted earnings per share of $2.43.
A note on sourcing. Figures and quotations are from Aflac’s third-quarter 2026 results release and CFO video update, filed with the SEC on 4 November 2026. Shares and differences are our arithmetic.
Gennaro Cuofano is a CRO and tech executive who has worked in AI since late 2015, starting with bringing NLP, natural-language generation, voice and chatbot products to the marketing industry. His background is in law and finance: he holds a Master's degree in Law and an International MBA with an emphasis on corporate finance (LUISS Business School and the University of San Diego, 2012), and worked as a financial analyst at a real-estate investment firm in San Diego and as an assistant controller. His work focuses on business model strategy, business engineering and, more broadly, structural analysis: how companies make money, read from their own filings. He created FourWeekMBA and leads research there and at The Business Engineer, his newsletter on AI and business strategy, with over 95,000 subscribers and more than 1,000 published analyses. His writing has also appeared on Entrepreneur (for example, How to Digitize a Family Business in Europe) and HackerNoon. Find him on LinkedIn and Substack. See how we source.
