White Mountains Insurance (WTM) Operating Margin (2009 - 2026)

White Mountains Insurance's Operating Margin history runs 18 years deep, the most recent figure standing at 13.79% for Q1 2026.

• In Q1 2026, Operating Margin fell 130.0% year-over-year to 13.79%; the TTM figure through Mar 2026 stood at 7.73% (down 121.0% YoY), while the FY2025 annual figure was 6.64%, down 351.0% from the prior year.
• Operating Margin was 13.79% for Q1 2026 at White Mountains Insurance, up from 4.23% in the prior quarter.
• In the past five years, Operating Margin ranged from a high of 32.72% in Q2 2022 to a low of 4.23% in Q4 2025.
• Historically, Operating Margin has averaged 12.85% across 5 years, with a median of 11.98% in 2022.
• The sharpest annual moves came in 2022 and 2023: Operating Margin jumped 1897 bps in 2022, then sank 2136 bps in 2023.
• A 5-year view of Operating Margin shows it stood at 11.98% in 2022, then soared by 45 bps to 17.31% in 2023, then slumped by 68 bps to 5.56% in 2024, then decreased by 24 bps to 4.23% in 2025, then surged by 226 bps to 13.79% in 2026.
• The last three Operating Margin figures came in at 13.79% (Q1 2026), 4.23% (Q4 2025), and 6.85% (Q3 2025), per Business Quant data.