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Core Laboratories
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Overview Fund Activity

188 hedge funds and large institutions have $600M invested in Core Laboratories in 2025 Q2 according to their latest regulatory filings, with 28 funds opening new positions, 68 increasing their positions, 58 reducing their positions, and 30 closing their positions.

Holders
188
Holders Change
-7
Holders Change %
-3.59%
% of All Funds
2.52%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
28
Increased
68
Reduced
58
Closed
30
Calls
$500K
Puts
$766K
Net Calls
-$266K
Net Calls Change
-$100K

Top Buyers

1
AI
1
Ariel Investments
Illinois
$149M
2
Millennium Management
2
Millennium Management
New York
$3.71M
3
State Street
3
State Street
Massachusetts
$24.9M
4
Dimensional Fund Advisors
4
Dimensional Fund Advisors
Texas
$13.5M
5
GJL
5
Gendell Jeffrey L
$6.56M

Top Sellers

1
Vanguard Group
1
Vanguard Group
Pennsylvania
$51.6M
2
BTW
2
Boston Trust Walden
Massachusetts
$0
3
T. Rowe Price Investment Management
3
T. Rowe Price Investment Management
Maryland
$10.1M
4
RA
4
Royce & Associates
New York
$8.9M
5
FAM
5
Fred Alger Management
New York
$6.27M
Name Market Value Shares Shares
Change 		Shares
Change %
TRSOTSOK
101
Teachers Retirement System of the State of Kentucky
Kentucky
$177K 15,373 – –
VOYA Investment Management
102
VOYA Investment Management
Georgia
$161K 13,982 +188 +1%
New York State Common Retirement Fund
103
New York State Common Retirement Fund
New York
$160K 13,896 – –
MSRPS
104
Maryland State Retirement & Pension System
Maryland
$157K 13,665 – –
ASRS
105
Arizona State Retirement System
Arizona
$157K 13,630 +162 +1%
ECM
106
Everence Capital Management
Indiana
$155K 13,420 +13,420 New
State Board of Administration of Florida Retirement System
107
State Board of Administration of Florida Retirement System
Florida
$154K 13,390 – –
AB
108
Amalgamated Bank
New York
$154K 13,335 – –
VPIM
109
Vanguard Personalized Indexing Management
California
$146K 12,684 +12,684 New
LPL Financial
110
LPL Financial
California
$140K 12,113 -2,536 -17%
COPPSERS
111
Commonwealth of Pennsylvania Public School Employees Retirement System
Pennsylvania
$139K 12,037 +831 +7%
IP
112
Isthmus Partners
Wisconsin
$137K 11,892 +424 +4%
Osaic Holdings
113
Osaic Holdings
Arizona
$135K 7,950 +109 +1%
Amundi
114
Amundi
France
$134K 10,419 -15,860 -60%
State of Tennessee, Department of Treasury
115
State of Tennessee, Department of Treasury
Tennessee
$132K 11,439 – –
PFSRSONJ
116
Police & Firemen's Retirement System of New Jersey
New Jersey
$128K 11,090 – –
Zurich Cantonal Bank
117
Zurich Cantonal Bank
Switzerland
$124K 10,787 – –
OPERF
118
Oregon Public Employees Retirement Fund
Oregon
$124K 10,740 – –
ProShare Advisors
119
ProShare Advisors
Maryland
$121K 10,483 -571 -5%
VF
120
Virtu Financial
New York
$117K 10,166 +10,166 New
Cerity Partners
121
Cerity Partners
New York
$117K 10,127 -3,102 -23%
OC
122
Oppenheimer & Co
New York
$116K 10,087 – –
ISL
123
Ingalls & Snyder LLC
New York
$115K 10,000 +10,000 New
SG Americas Securities
124
SG Americas Securities
New York
$103K 8,907 -8,297 -48%
KK
125
KLP Kapitalforvaltning
Norway
$99.1K 8,600 – –
3 4
5
6 7