Thompson Siegel & Walmsley LLC

SEC CIK: 0001008322
Latest filing: Aug 11, 2026

SEC filings (opens in a new tab)

WTM holding history

White Mountains Insurance Group Ltd in every 13F filed by Thompson Siegel & Walmsley LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

WTM overview All 13F holders of WTM Full Q2 2026 holdings

Shares (Q2 2026): 7,656
Value: $15.9M
% of portfolio: 0.3%
Quarters held: 22; Since Q1 2021

Holdings of WTM by Thompson Siegel & Walmsley LLC, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q2 2026	7,656	$15.9M	0.3%	+447+6.2%	Added	Holders
Q1 2026	7,209	$15.8M	0.3%	−1,718−19.2%	Reduced	Holders
Q4 2025	8,927	$18.6M	0.3%	+275+3.2%	Added	Holders
Q3 2025	8,652	$14.5M	0.2%	+347+4.2%	Added	Holders
Q2 2025	8,305	$14.9M	0.3%	−12−0.1%	Reduced	Holders
Q1 2025	8,317	$16.0M	0.3%	−1,929−18.8%	Reduced	Holders
Q4 2024	10,246	$19.9M	0.3%	−117−1.1%	Reduced	Holders
Q3 2024	10,363	$17.6M	0.3%	−1,554−13.0%	Reduced	Holders
Q2 2024	11,917	$21.7M	0.3%	−3,948−24.9%	Reduced	Holders
Q1 2024	15,865	$28.5M	0.4%	+70+0.4%	Added	Holders
Q4 2023	15,795	$23.8M	0.4%	−463−2.8%	Reduced	Holders
Q3 2023	16,258	$24.3M	0.4%	−1,152−6.6%	Reduced	Holders
Q2 2023	17,410	$24.2M	0.4%	−70.0%	Reduced	Holders
Q1 2023	17,417	$24.0M	0.4%	−2,412−12.2%	Reduced	Holders
Q4 2022	19,829	$28.0M	0.5%	+672+3.5%	Added	Holders
Q3 2022	19,157	$25.0M	0.4%	−3,622−15.9%	Reduced	Holders
Q2 2022	22,779	$28.4M	0.5%	−6,249−21.5%	Reduced	Holders
Q1 2022	29,028	$33.0M	0.5%	−195−0.7%	Reduced	Holders
Q4 2021	29,223	$29.6M	0.4%	−1,529−5.0%	Reduced	Holders
Q3 2021	30,752	$32.9M	0.5%	+27+0.1%	Added	Holders
Q2 2021	30,725	$35.3M	0.5%	−263−0.8%	Reduced	Holders
Q1 2021	30,988	$34.5M	0.5%	–	–	Holders

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.