Total IBNR plus expected development on reported claims

Name: White Mountains Insurance Group Total IBNR plus expected development on reported claims by Products & Services
Creator: OpenCapital
License: https://www.opencapital.sh/terms

White Mountains Insurance Group·Products & Services·5 segments·Rolls up to Incurred but not reported (IBNR) claims liability, net

Breakdown

Segment	Q4 '21	Q4 '22	Q4 '23	Q4 '24	Q4 '25
Marine & Energy	—	—	15,480,000,000%	18,260,000,000%	18,490,000,000%
Property and Accident & Health	—	—	15,690,000,000%	20,270,000,000%	17,170,000,000%
Specialty	5,740,000,000%	12,530,000,000%	15,160,000,000%	14,160,000,000%	16,940,000,000%
Casualty-Active	—	—	5,790,000,000%	5,740,000,000%	7,190,000,000%
Casualty-Runoff	380,000,000%	500,000,000%	580,000,000%	520,000,000%	420,000,000%
Total	—	—	—	—	—

Segments

Property and Accident & HealthView metric

Marine & EnergyView metric

SpecialtyView metric

Casualty-ActiveView metric

Casualty-RunoffView metric