Arch Capital Group closed at $110.68 on Nov 4, up 2.68% — matching its 52-week closing high. Volume of 2.3M shares was 1.03× its 20-day average (close to normal).
Split-adjusted performance: +16.7% over one month, +16.9% over six months, +28.7% over one year.
In the quarter ended Jun 30, 2026, revenue was $4.67B, down 10.5% from a year earlier, with a net margin of 22.4%.
Short interest was 8.8M shares at the Oct 15 settlement, up 14.4% from the prior report (2.7% of float, 3.7 days to cover).