How many shares of WTM does Boston Partners own?

As of 2026-Q2, Boston Partners holds 55,569 shares of WTM (WHITE MTNS INS GROUP LTD).

What is Boston Partners's WTM position worth?

As of 2026-Q2, Boston Partners's WTM position is worth $115.3M.

Is Boston Partners buying or selling WTM?

In 2026-Q2, Boston Partners decreased their WTM position (-3.3% change in shares).

When did Boston Partners first buy WTM?

Based on available 13F filings, Boston Partners first reported a position in WTM in 2018-Q4. They have held the position across 31 quarters.

Back to

Boston Partners

WTM
31 quarters

Position history for Boston Partners's holdings in WHITE MTNS INS GROUP LTD

Current Value

$115.3M

Current Shares

55,569

Total Value Change

-$35.1M

Total Shares Change

-119,778

Quarter-by-Quarter History

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Decreased	55,569	-3.3%	$115.3M	0.1%	$2,073.39	0
2026-Q1	Decreased	57,459	-25.3%	$126.2M	0.1%	$2,215.09	0
2025-Q4	Decreased	76,911	-8.9%	$159.7M	0.2%	$2,078.62	0
2025-Q3	Decreased	84,445	-5.5%	$142.5M	0.1%	$1,677.70	0
2025-Q2	Increased	89,394	+4.9%	$160.5M	0.2%	$1,783.93	38
2025-Q1	Decreased	85,236	-0.2%	$163.3M	0.2%	$1,902.57	0
2024-Q4	Increased	85,445	+0.4%	$165.8M	0.2%	$1,928.20	36
2024-Q3	Decreased	85,097	-2.9%	$145M	0.2%	$1,700.10	0
2024-Q2	Decreased	87,671	-3.2%	$158.9M	0.2%	$1,816.48	0
2024-Q1	Decreased	90,594	-2.1%	$162.4M	0.2%	$1,793.35	0
2023-Q4	Decreased	92,552	-19.2%	$140M	0.2%	$1,503.36	0
2023-Q3	Decreased	114,499	-3.0%	$170.7M	0.2%	$1,494.05	0
2023-Q2	Decreased	118,005	-6.0%	$165.3M	0.2%	$1,378.49	0
2023-Q1	Increased	125,537	+1.0%	$173.6M	0.2%	$1,375.78	37
2022-Q4	Decreased	124,320	-2.9%	$176.5M	0.2%	$1,411.75	0
2022-Q3	Decreased	128,012	-3.9%	$167.7M	0.2%	$1,286.57	0
2022-Q2	Decreased	133,215	-1.6%	$166.1M	0.2%	$1,226.94	0
2022-Q1	Decreased	135,408	-1.8%	$153.7M	0.2%	$1,100.31	0
2021-Q4	Decreased	137,836	-4.2%	$139.8M	0.2%	$1,009.53	0
2021-Q3	Increased	143,832	+2.4%	$154M	0.2%	$1,083.92	37
2021-Q2	Increased	140,459	+2.4%	$161.4M	0.2%	$1,144.74	37
2021-Q1	Increased	137,195	+3.9%	$153.6M	0.2%	$1,113.20	38
2020-Q4	Decreased	131,996	-0.1%	$132.1M	0.2%	$994.69	0
2020-Q3	Decreased	132,081	-3.9%	$102.9M	0.2%	$772.22	0
2020-Q2	Decreased	137,468	-4.8%	$122.1M	0.2%	$877.81	0
2020-Q1	Decreased	144,411	-2.0%	$131.3M	0.3%	$904.50	0
2019-Q4	Decreased	147,337	-6.6%	$164.4M	0.2%	$1,113.03	0
2019-Q3	Decreased	157,739	-4.4%	$170.3M	0.2%	$1,063.73	0
2019-Q2	Decreased	164,923	-1.4%	$168.6M	0.2%	$1,016.52	0
2019-Q1	Decreased	167,252	-4.6%	$154.8M	0.2%	$921.00	0
2018-Q4	First report	175,347	-	$150.4M	0.2%	$849.07	0

Other major holders of WTM: BNP PARIBAS FINANCIAL MARKETS, VANGUARD GROUP INC

WTM31 quarters

WTM
31 quarters