Growth Metrics

White Mountains Insurance (WTM) Non Operating Investment Income (2016 - 2025)

White Mountains Insurance (WTM) has 17 years of Non Operating Investment Income data on record, last reported at $110.3 million in Q4 2025.

  • For Q4 2025, Non Operating Investment Income rose 153.67% year-over-year to $110.3 million; the TTM value through Dec 2025 reached $361.5 million, up 95.51%, while the annual FY2025 figure was $361.5 million, 95.51% up from the prior year.
  • Non Operating Investment Income reached $110.3 million in Q4 2025 per WTM's latest filing, up from $83.9 million in the prior quarter.
  • Across five years, Non Operating Investment Income topped out at $371.7 million in Q4 2023 and bottomed at -$396.8 million in Q3 2021.
  • Average Non Operating Investment Income over 5 years is $25.7 million, with a median of $19.3 million recorded in 2021.
  • Peak YoY movement for Non Operating Investment Income: crashed 8726.09% in 2021, then surged 953.72% in 2023.
  • A 5-year view of Non Operating Investment Income shows it stood at $19.8 million in 2021, then tumbled by 494.95% to -$78.2 million in 2022, then skyrocketed by 575.32% to $371.7 million in 2023, then crashed by 155.29% to -$205.5 million in 2024, then surged by 153.67% to $110.3 million in 2025.
  • Per Business Quant database, its latest 3 readings for Non Operating Investment Income were $110.3 million in Q4 2025, $83.9 million in Q3 2025, and $117.3 million in Q2 2025.