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White Mountains Insurance

319 hedge funds and large institutions have $4.16B invested in White Mountains Insurance in 2025 Q2 according to their latest regulatory filings, with 34 funds opening new positions, 103 increasing their positions, 107 reducing their positions, and 27 closing their positions.

Holders
319
Holders Change
Holders Change %
0%
% of All Funds
4.28%
Holding in Top 10
5
Holding in Top 10 Change
-2
Holding in Top 10 Change %
-28.57%
% of All Funds
0.07%
New
34
Increased
103
Reduced
107
Closed
27
Calls
Puts
Net Calls
Net Calls Change
Name Market Value Shares Shares
Change
Shares
Change %
PS
201
Principal Securities
Iowa
$359K 200 +15 +8%
NRS
202
Neville Rodie & Shaw
New York
$359K 200
FNFDCM
203
Folger Nolan Fleming Douglas Capital Management
District of Columbia
$357K 199
Bank of Nova Scotia
204
Bank of Nova Scotia
Ontario, Canada
$352K 196 +41 +26%
VT
205
Vise Technologies
New York
$352K 196 +196 New
SC
206
Savant Capital
Illinois
$345K 192 +45 +31%
MAM
207
Martingale Asset Management
Massachusetts
$343K 191 -416 -69%
TRCT
208
Tower Research Capital (TRC)
New York
$341K 190 +130 +217%
BNP Paribas Financial Markets
209
BNP Paribas Financial Markets
France
$338K 188 +41 +28%
JIC
210
Johnson Investment Counsel
Ohio
$332K 185
GI
211
GAMMA Investing
California
$327K 182 +106 +139%
AAP
212
Arax Advisory Partners
Colorado
$326K 181 -1 -0.5%
FRA
213
Frank Rimerman Advisors
California
$318K 177 -5 -3%
MOS
214
MGO One Seven
Ohio
$314K 175
CL
215
Choreo LLC
Illinois
$311K 173 +1 +0.6%
TSS
216
Two Sigma Securities
New York
$305K 170 -43 -20%
NA
217
NewEdge Advisors
Louisiana
$305K 170
SCM
218
Sterling Capital Management
North Carolina
$300K 167 +30 +22%
IP
219
Isthmus Partners
Wisconsin
$294K 164
CGH
220
Crossmark Global Holdings
Texas
$284K 158 +37 +31%
KeyBank National Association
221
KeyBank National Association
Ohio
$284K 158 -25 -14%
Prudential Financial
222
Prudential Financial
New Jersey
$279K 150 +150 New
DWA
223
Douglass Winthrop Advisors
New York
$278K 155 -36 -19%
MGIA
224
Moneta Group Investment Advisors
Missouri
$269K 150
CW
225
CreativeOne Wealth
Kansas
$266K 148