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American International Group vs Arch Capital Group: AIG and ACGL compared

American International Group is the larger company: $7.4B of revenue in its latest quarter (Q3 2026) against $4.7B for Arch Capital Group (Q3 2026). American International Group is growing faster (+17% against -9% a year earlier). Arch Capital Group is more profitable, with an operating margin of 25.5% against 15.0%.

American International Group vs Arch Capital Group, latest quarterAmerican International Group vs Arch Capital Group, latest quarterAmerican International Group (AIG)Arch Capital Group (ACGL)Revenue$7.4B$4.7BRevenue growth, Y/Y+17%-9%Operating margin15.0%25.5%Net margin11.4%22.2%

Where the money goes: AIG and ACGL

American International Group (AIG) · Q3 2026

American International Group, Q3 2026: revenue $7.4B (+17% year over year), operating margin 15.0%, net earnings $849M, operating cash flow $2.7B. The chart follows the revenue to costs, profit and cash.

Arch Capital Group (ACGL) · Q3 2026

Arch Capital Group, Q3 2026: revenue $4.7B (-9% year over year), operating margin 25.5%, net earnings $1.0B, operating cash flow $1.8B. The chart follows the revenue to costs, profit and cash.

American International Group (AIG)Arch Capital Group (ACGL)
Latest quarterQ3 2026Q3 2026
Revenue$7.4B$4.7B
Revenue growth, Y/Y+17%-9%
Operating margin15.0%25.5%
Net earnings$849M$1.0B
Net margin11.4%22.2%
Operating cash flow$2.7B$1.8B
Free cash flow—$1.7B
Market value$42.7B$37.7B
P/E13.2×9.1×
Analysts’ mean target$88.40$113.58

Questions

Which is bigger, American International Group or Arch Capital Group?

American International Group is the larger company: $7.4B of revenue in its latest quarter (Q3 2026) against $4.7B for Arch Capital Group (Q3 2026).

Is American International Group or Arch Capital Group growing faster?

American International Group is growing faster (+17% against -9% a year earlier).

Which is more profitable, American International Group or Arch Capital Group?

Arch Capital Group is more profitable, with an operating margin of 25.5% against 15.0%.

More: American International Group earnings · how American International Group makes money · Arch Capital Group earnings · how Arch Capital Group makes money

From the companies' latest 10-Q, 10-K or earnings release (10-Q filed Nov 4, 2026; 10-Q filed Nov 4, 2026). Fiscal quarters can end on different dates. Not investment advice.