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White Mountains Insurance

Name Holding Trade Value Shares
Change
Change in
Stake
PP
201
Paloma Partners
Connecticut
– -$608K -700 Closed
MF
202
Magnetar Financial
Illinois
– -$562K -647 Closed
EP
203
Elkfork Partners
Oregon
– -$532K -612 Closed
RCM
204
Riverhead Capital Management
Delaware
– -$478K -550 Closed
GHCM
205
Glen Harbor Capital Management
California
– -$438K -504 Closed
MCIM
206
Meadow Creek Investment Management
Georgia
– -$344K -396 Closed
FCM
207
Flinton Capital Management
Pennsylvania
– -$250K -288 Closed
Commonwealth Equity Services
208
Commonwealth Equity Services
Massachusetts
– -$230K -265 Closed
MWNA
209
Marshall Wace North America
New York
– -$228K -263 Closed
RJFSA
210
Raymond James Financial Services Advisors
Florida
– -$224K -258 Closed
SG
211
StoneX Group
New York
– -$221K -254 Closed
Walleye Trading
212
Walleye Trading
New York
– -$218K -251 Closed
RFC
213
Regions Financial Corp
Alabama
– -$205K -237 Closed
AIG
214
American International Group
New York
– -$82K -94 Closed
TRCT
215
Tower Research Capital (TRC)
New York
– -$69K -79 Closed
WEC
216
Winslow Evans & Crocker
Massachusetts
– -$42.6K -49 Closed
PFO
217
Pathstone Family Office
New Jersey
– -$39K -45 Closed
PMFA
218
Plante Moran Financial Advisors
Michigan
– -$27K -31 Closed
DPA
219
Delphi Private Advisors
California
– -$10K -13 Closed
OFW
220
Omnia Family Wealth
Florida
– -$3K -3 Closed