SCHEDULE I SUMMARY OF INVESTMENTS-OTHER THAN INVESTMENTS IN RELATED PARTIES

12 Months Ended

Dec. 31, 2019

SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Abstract]

SCHEDULE I SUMMARY OF INVESTMENTS-OTHER THAN INVESTMENTS IN RELATED PARTIES

WHITE MOUNTAINS INSURANCE GROUP, LTD.

SUMMARY OF INVESTMENTS—OTHER THAN

INVESTMENTS IN RELATED PARTIES

At December 31, 2019

Millions	Cost		Carrying Value		Fair Value
Fixed maturity investments:
U.S. Government and agency obligations	$	231.7	$	232.5	$	232.5
Debt securities issued by corporations	454.9		467.2		467.2
Municipal obligations	284.7		297.1		297.1
Mortgage and asset-backed securities	206.6		209.0		209.0
Total fixed maturity investments	1,177.9		1,205.8		1,205.8
Short-term investments	201.2		201.2		201.2
Common equity securities:
Exchange traded funds	436.0		536.4		536.4
Other	117.3		147.5		147.5
Total common equity securities	553.3		683.9		683.9
Other long-term investments	667.4		856.3		856.3
Total investments	$	2,599.8	$	2,947.2	$	2,947.2