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Core Laboratories
CLB

Overview Fund Activity

190 hedge funds and large institutions have $601M invested in Core Laboratories in 2025 Q2 according to their latest regulatory filings, with 28 funds opening new positions, 69 increasing their positions, 59 reducing their positions, and 31 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
190
Holders Change
-5
Holders Change %
-2.56%
% of All Funds
2.55%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
28
Increased
69
Reduced
59
Closed
31
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 Holding Trade Value Shares
Change 		Shares
Change %
A
101
AlphaQuest
New York
$185K +$155K +13,412 +504%
TRSOTSOK
102
Teachers Retirement System of the State of Kentucky
Kentucky
$177K – – –
VOYA Investment Management
103
VOYA Investment Management
Georgia
$161K +$2.17K +188 +1%
New York State Common Retirement Fund
104
New York State Common Retirement Fund
New York
$160K – – –
MSRPS
105
Maryland State Retirement & Pension System
Maryland
$157K – – –
ASRS
106
Arizona State Retirement System
Arizona
$157K +$1.87K +162 +1%
ECM
107
Everence Capital Management
Indiana
$155K +$155K +13,420 New
State Board of Administration of Florida Retirement System
108
State Board of Administration of Florida Retirement System
Florida
$154K – – –
AB
109
Amalgamated Bank
New York
$154K – – –
VPIM
110
Vanguard Personalized Indexing Management
California
$146K +$146K +12,684 New
LPL Financial
111
LPL Financial
California
$140K -$29.2K -2,536 -17%
COPPSERS
112
Commonwealth of Pennsylvania Public School Employees Retirement System
Pennsylvania
$139K +$9.57K +831 +7%
IP
113
Isthmus Partners
Wisconsin
$137K +$4.88K +424 +4%
Osaic Holdings
114
Osaic Holdings
Arizona
$135K +$1.85K +109 +1%
Amundi
115
Amundi
France
$134K -$205K -15,860 -60%
State of Tennessee, Department of Treasury
116
State of Tennessee, Department of Treasury
Tennessee
$132K – – –
PFSRSONJ
117
Police & Firemen's Retirement System of New Jersey
New Jersey
$128K – – –
Zurich Cantonal Bank
118
Zurich Cantonal Bank
Switzerland
$124K – – –
OPERF
119
Oregon Public Employees Retirement Fund
Oregon
$124K – – –
ProShare Advisors
120
ProShare Advisors
Maryland
$121K -$6.58K -571 -5%
VF
121
Virtu Financial
New York
$117K +$117K +10,166 New
Cerity Partners
122
Cerity Partners
New York
$117K -$35.7K -3,102 -23%
OC
123
Oppenheimer & Co
New York
$116K – – –
ISL
124
Ingalls & Snyder LLC
New York
$115K +$115K +10,000 New
SG Americas Securities
125
SG Americas Securities
New York
$103K -$95.9K -8,297 -48%
3 4
5
6 7