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Effectdossier · gearchiveerd kwartaal

WTM

White Mountains Insurance Group, Ltd. · Financial Services · Insurance - Diversified

2,141.2 +0.4% marktkapitalisatie $5.30B koers vertraagd (FMP) · per Aug 25 22:08 UTC — los van onderstaande aangiftegegevens

Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024
100Gevolgde houders
-5Δ houders
1.16MGehouden aandelen
$2.41BGerapporteerde waarde
+2Nieuwe posities
−6Uitstappen
Falling Overtuigingsscore 37/100 Hoe deze worden berekend → Dit toelichten aan de Research Desk →

Momentum-inputs (vergelijkbare managers): breedte van houders -4.8% · aandelenstroom +0.4% · netto nieuwe posities -4.0%formule
Geconcentreerde accumulatie — stijgende aandelen bij minder houders

Alle eigendomscijfers: uitsluitend gevolgde 13F-managers, posities in gewone aandelen, rapportageperiode Q2 2026

Eigendom in de tijd
KwartaalHoudersΔAandelenGerapporteerde waardeNieuwUitstappen
Q2 2026 100 -5 1.16M $2.41B +2 −6
Q1 2026 107 0 1.13M $2.49B +3 −4
Q4 2025 108 +2 1.27M $2.64B +3
Q3 2025 16 +1 649.64K $1.09B +1 −1
Q2 2025 13 -1 533.60K $958.13M +1 −2
Q1 2025 11 +1 169.09K $325.53M +1
Q4 2024 10 0 193.12K $375.52M
Q3 2024 9 -1 149.43K $253.48M −1
Q2 2024 10 158.36K $287.38M
Aantal houders
Wie het bezit · Q2 2026
#ManagerAandelenΔ aandelenWaardeHun gewichtGehouden
1 Dimensional Fund Advisors Lp 158.95K +1.5% $329.58M 0.1% ▲ Add 3 SEC ↗
2 Dimensional Fund Advisors Lp 158.95K +1.5% $329.58M 0.1% ▲ Add 3 SEC ↗
3 Dimensional Fund Advisors Lp 158.95K +1.5% $329.58M 0.1% ▲ Add 3 SEC ↗
4 Dimensional Fund Advisors Lp 158.95K +1.5% $329.58M 0.1% ▲ Add 3 SEC ↗
5 Dimensional Fund Advisors Lp 158.95K +1.5% $329.58M 0.1% ▲ Add 3 SEC ↗
6 Neuberger Berman Group LLC 119.14K -4.5% $247.03M 0.2% ▼ Trim 3 SEC ↗
7 Neuberger Berman Group LLC 119.14K -4.5% $247.03M 0.2% ▼ Trim 3 SEC ↗
8 BlackRock (passief) 117.87K +4.0% $244.39M 0.0% ▲ Add 5 SEC ↗
9 BlackRock (passief) 117.87K +4.0% $244.39M 0.0% ▲ Add 5 SEC ↗
10 BlackRock (passief) 117.87K +4.0% $244.39M 0.0% ▲ Add 5 SEC ↗
11 BlackRock (passief) 117.87K +4.0% $244.39M 0.0% ▲ Add 5 SEC ↗
12 BlackRock (passief) 117.87K +4.0% $244.39M 0.0% ▲ Add 5 SEC ↗
13 BlackRock (passief) 117.87K +4.0% $244.39M 0.0% ▲ Add 5 SEC ↗
14 BlackRock (passief) 117.87K +4.0% $244.39M 0.0% ▲ Add 5 SEC ↗
15 BlackRock (passief) 117.87K +4.0% $244.39M 0.0% ▲ Add 5 SEC ↗
16 BlackRock (passief) 117.87K +4.0% $244.39M 0.0% ▲ Add 5 SEC ↗
17 BlackRock (passief) 117.87K +4.0% $244.39M 0.0% ▲ Add 5 SEC ↗
18 BlackRock (passief) 117.87K +4.0% $244.39M 0.0% ▲ Add 5 SEC ↗
19 BlackRock (passief) 117.87K +4.0% $244.39M 0.0% ▲ Add 5 SEC ↗
20 BlackRock (passief) 117.87K +4.0% $244.39M 0.0% ▲ Add 5 SEC ↗
21 BlackRock (passief) 117.87K +4.0% $244.39M 0.0% ▲ Add 5 SEC ↗
22 BlackRock (passief) 117.87K +4.0% $244.39M 0.0% ▲ Add 5 SEC ↗
23 BlackRock (passief) 117.87K +4.0% $244.39M 0.0% ▲ Add 5 SEC ↗
24 Vanguard Capital Management Llc 107.48K -1.5% $222.85M 0.0% ▼ Trim 2 SEC ↗
25 Boston Partners 55.57K -3.3% $115.28M 0.1% ▼ Trim 3 SEC ↗
26 Boston Partners 55.57K -3.3% $115.28M 0.1% ▼ Trim 3 SEC ↗
27 Boston Partners 55.57K -3.3% $115.28M 0.1% ▼ Trim 3 SEC ↗
28 State Street Global Advisors (passief) 50.26K +2.2% $104.20M 0.0% ▲ Add 7 SEC ↗
29 Geode Capital Management (passief) 49.41K +17.3% $102.47M 0.0% ▲ Add 9 SEC ↗
30 Geode Capital Management (passief) 49.41K +17.3% $102.47M 0.0% ▲ Add 9 SEC ↗
31 Morgan Stanley 46.87K -21.0% $97.18M 0.0% ▼ Trim 4 SEC ↗
32 Morgan Stanley 46.87K -21.0% $97.18M 0.0% ▼ Trim 4 SEC ↗
33 Morgan Stanley 46.87K -21.0% $97.18M 0.0% ▼ Trim 4 SEC ↗
34 Morgan Stanley 46.87K -21.0% $97.18M 0.0% ▼ Trim 4 SEC ↗
35 Morgan Stanley 46.87K -21.0% $97.18M 0.0% ▼ Trim 4 SEC ↗
36 Morgan Stanley 46.87K -21.0% $97.18M 0.0% ▼ Trim 4 SEC ↗
37 Morgan Stanley 46.87K -21.0% $97.18M 0.0% ▼ Trim 4 SEC ↗
38 Morgan Stanley 46.87K -21.0% $97.18M 0.0% ▼ Trim 4 SEC ↗
39 Morgan Stanley 46.87K -21.0% $97.18M 0.0% ▼ Trim 4 SEC ↗
40 Morgan Stanley 46.87K -21.0% $97.18M 0.0% ▼ Trim 4 SEC ↗
41 Morgan Stanley 46.87K -21.0% $97.18M 0.0% ▼ Trim 4 SEC ↗
42 Morgan Stanley 46.87K -21.0% $97.18M 0.0% ▼ Trim 4 SEC ↗
43 Morgan Stanley 46.87K -21.0% $97.18M 0.0% ▼ Trim 4 SEC ↗
44 Morgan Stanley 46.87K -21.0% $97.18M 0.0% ▼ Trim 4 SEC ↗
45 Morgan Stanley 46.87K -21.0% $97.18M 0.0% ▼ Trim 4 SEC ↗
46 American Century Companies Inc 31.11K +274.4% $64.50M 0.0% ▲ Add 3 SEC ↗
47 Norges Bank (passief) 27.96K Nieuw $57.96M 0.0% New 1 SEC ↗
48 Bank Of America Corp /De/ 25.03K -11.7% $51.89M 0.0% ▼ Trim 3 SEC ↗
49 Bank Of America Corp /De/ 25.03K -11.7% $51.89M 0.0% ▼ Trim 3 SEC ↗
50 Bank Of America Corp /De/ 25.03K -11.7% $51.89M 0.0% ▼ Trim 3 SEC ↗
51 Bank Of America Corp /De/ 25.03K -11.7% $51.89M 0.0% ▼ Trim 3 SEC ↗
52 Bank Of America Corp /De/ 25.03K -11.7% $51.89M 0.0% ▼ Trim 3 SEC ↗
53 Charles Schwab Investment… 23.50K -3.0% $48.74M 0.0% ▼ Trim 3 SEC ↗
54 Allspring Global Investments… 18.12K -2.7% $37.39M 0.1% ▼ Trim 3 SEC ↗
55 Allspring Global Investments… 18.12K -2.7% $37.39M 0.1% ▼ Trim 3 SEC ↗
56 Gotham Asset Management 17.94K +98.3% $37.20M 0.1% ▲ Add 5 SEC ↗
57 Brown Advisory Inc 17.72K -0.7% $36.75M 0.1% ▼ Trim 3 SEC ↗
58 Brown Advisory Inc 17.72K -0.7% $36.75M 0.1% ▼ Trim 3 SEC ↗
59 Jane Street Group, Llc 17.23K +24.8% $35.72M 0.0% ▲ Add 3 SEC ↗
60 Jane Street Group, Llc 17.23K +24.8% $35.72M 0.0% ▲ Add 3 SEC ↗
61 UBS Group AG 16.20K +55.1% $33.58M 0.0% ▲ Add 3 SEC ↗
62 UBS Group AG 16.20K +55.1% $33.58M 0.0% ▲ Add 3 SEC ↗
63 UBS Group AG 16.20K +55.1% $33.58M 0.0% ▲ Add 3 SEC ↗
64 Raymond James Financial Inc 14.83K -38.1% $30.75M 0.0% ▼ Trim 3 SEC ↗
65 Raymond James Financial Inc 14.83K -38.1% $30.75M 0.0% ▼ Trim 3 SEC ↗
66 Raymond James Financial Inc 14.83K -38.1% $30.75M 0.0% ▼ Trim 3 SEC ↗
67 Raymond James Financial Inc 14.83K -38.1% $30.75M 0.0% ▼ Trim 3 SEC ↗
68 Northern Trust Corp 14.57K -6.0% $30.21M 0.0% ▼ Trim 3 SEC ↗
69 Northern Trust Corp 14.57K -6.0% $30.21M 0.0% ▼ Trim 3 SEC ↗
70 Northern Trust Corp 14.57K -6.0% $30.21M 0.0% ▼ Trim 3 SEC ↗
71 Northern Trust Corp 14.57K -6.0% $30.21M 0.0% ▼ Trim 3 SEC ↗
72 Wellington Management 14.53K -2.4% $30.13M 0.0% ▼ Trim 9 SEC ↗
73 Wellington Management 14.53K -2.4% $30.13M 0.0% ▼ Trim 9 SEC ↗
74 Wellington Management 14.53K -2.4% $30.13M 0.0% ▼ Trim 9 SEC ↗
75 Envestnet Asset Management Inc 13.84K -11.1% $28.69M 0.0% ▼ Trim 3 SEC ↗
76 Quantinno Capital Management LP 12.62K +29.0% $26.17M 0.0% ▲ Add 3 SEC ↗
77 Goldman Sachs Group 12.15K -23.0% $25.19M 0.0% ▼ Trim 4 SEC ↗
78 Goldman Sachs Group 12.15K -23.0% $25.19M 0.0% ▼ Trim 4 SEC ↗
79 Goldman Sachs Group 12.15K -23.0% $25.19M 0.0% ▼ Trim 4 SEC ↗
80 Victory Capital Management Inc 10.68K -4.1% $22.15M 0.0% ▼ Trim 3 SEC ↗
81 First Trust Advisors Lp 10.60K +246.8% $21.99M 0.0% ▲ Add 3 SEC ↗
82 Qube Research & Technologies Ltd 9.67K +852.1% $20.06M 0.0% ▲ Add 3 SEC ↗
83 Wells Fargo & Company/Mn 8.71K -0.8% $18.06M 0.0% ▼ Trim 3 SEC ↗
84 Wells Fargo & Company/Mn 8.71K -0.8% $18.06M 0.0% ▼ Trim 3 SEC ↗
85 Wells Fargo & Company/Mn 8.71K -0.8% $18.06M 0.0% ▼ Trim 3 SEC ↗
86 Wells Fargo & Company/Mn 8.71K -0.8% $18.06M 0.0% ▼ Trim 3 SEC ↗
87 Bank of New York Mellon Corp 8.41K -0.4% $17.44M 0.0% ▼ Trim 3 SEC ↗
88 Bank of New York Mellon Corp 8.41K -0.4% $17.44M 0.0% ▼ Trim 3 SEC ↗
89 Bank of New York Mellon Corp 8.41K -0.4% $17.44M 0.0% ▼ Trim 3 SEC ↗
90 Bank of New York Mellon Corp 8.41K -0.4% $17.44M 0.0% ▼ Trim 3 SEC ↗
91 Bank of New York Mellon Corp 8.41K -0.4% $17.44M 0.0% ▼ Trim 3 SEC ↗
92 Bank of New York Mellon Corp 8.41K -0.4% $17.44M 0.0% ▼ Trim 3 SEC ↗
93 Bank of New York Mellon Corp 8.41K -0.4% $17.44M 0.0% ▼ Trim 3 SEC ↗
94 Bank of New York Mellon Corp 8.41K -0.4% $17.44M 0.0% ▼ Trim 3 SEC ↗
95 Bank of New York Mellon Corp 8.41K -0.4% $17.44M 0.0% ▼ Trim 3 SEC ↗
96 Bank of New York Mellon Corp 8.41K -0.4% $17.44M 0.0% ▼ Trim 3 SEC ↗
97 Sei Investments Co 8.11K -26.9% $16.81M 0.0% ▼ Trim 3 SEC ↗
98 Sei Investments Co 8.11K -26.9% $16.81M 0.0% ▼ Trim 3 SEC ↗
99 Arrowstreet Capital 7.28K +280.8% $15.10M 0.0% ▲ Add 3 SEC ↗
100 Citadel Advisors 7.14K +174.2% $14.80M 0.0% ▲ Add 6 SEC ↗

"Hun gewicht" = het aandeel van de positie in de gerapporteerde 13F-aandelenwaarde van die beheerder — de overtuigingsmaatstaf. ✦ = gecureerde beheerder.

Nieuwe kopers

Norges Bank $57.96M 0.0%

Verlaten

Susquehanna International… $24.09M was 0.0%
Marshall Wace $8.52M was 0.0%
Renaissance Technologies $5.74M was 0.0%
Mariner, LLC $1.33M was 0.0%
Bridgewater Associates $909,541 was 0.0%
CIBC Asset Management Inc $272,423 was 0.0%

Volledige marktcontext: over ALLE 13F-indieners (SEC gestructureerde data, Q1 2026): 363 houders, 2.21M aandelen, $4.62B gerapporteerd. Dit betreft een andere, oudere periode dan de bovenstaande cijfers van het gevolgde universum; beide worden nooit gecombineerd.

Vaak gezamenlijk in bezit

Wat de gevolgde houders van dit effect verder het vaakst bezitten — aantallen gedeeld eigendom, geen fundamentele relaties.

Herkomst: Eigendom op basis van geparseerde 13F common-stockposities (gevolgde universum, vergelijkbare sets voor wijzigingen); insider-rijen afkomstig van formulieren 3/4/5; belangen uit Schedules 13D/13G; elke indiening verwijst naar het origineel op SEC EDGAR. Rapportageperiode: Q2 2026 · Methodologie · Verkrijg dit via de API