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Core Laboratories
CLB

195 hedge funds and large institutions have $762M invested in Core Laboratories in 2025 Q1 according to their latest regulatory filings, with 21 funds opening new positions, 56 increasing their positions, 77 reducing their positions, and 33 closing their positions.

New
Increased
Maintained
Reduced
Closed

0.33% more ownership

Funds ownership: 108.22% → 108.55% (+0.33%)

7% less funds holding

Funds holding: 209 → 195 (-14)

13% less capital invested

Capital invested by funds: $880M → $762M (-$118M)

27% less repeat investments, than reductions

Existing positions increased: 56 | Existing positions reduced: 77

34% less call options, than puts

Call options by funds: $321K | Put options by funds: $487K

36% less first-time investments, than exits

New positions opened: 21 | Existing positions closed: 33

Holders
195
Holders Change
-14
Holders Change %
-6.7%
% of All Funds
2.61%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
21
Increased
56
Reduced
77
Closed
33
Calls
$321K
Puts
$487K
Net Calls
-$166K
Net Calls Change
-$263K

Top Buyers

1
AI
Ariel Investments
Illinois
+$11.9M
2
Hotchkis & Wiley Capital Management
Hotchkis & Wiley Capital Management
California
+$6.71M
3
FAM
Fred Alger Management
New York
+$3.02M
4
Dimensional Fund Advisors
Dimensional Fund Advisors
Texas
+$2.09M
5
RHJA
Rice Hall James & Associates
California
+$1.35M

Top Sellers

1
BlackRock
BlackRock
New York
-$6.91M
2
Morgan Stanley
Morgan Stanley
New York
-$5.11M
3
Raymond James Financial
Raymond James Financial
Florida
-$3.29M
4
Vanguard Group
Vanguard Group
Pennsylvania
-$2.92M
5
CIM
Confluence Investment Management
Missouri
-$2.36M
Name Holding Trade Value Shares
Change 		Change in
Stake
Pathstone Holdings
101
Pathstone Holdings
New Jersey
$227K -$124K -7,425 -33%
LPL Financial
102
LPL Financial
California
$220K +$245K +14,649 New
New York State Common Retirement Fund
103
New York State Common Retirement Fund
New York
$208K – – –
VOYA Investment Management
104
VOYA Investment Management
Georgia
$207K -$21.1K -1,258 -8%
MSRPS
105
Maryland State Retirement & Pension System
Maryland
$205K -$36.4K -2,177 -14%
ASRS
106
Arizona State Retirement System
Arizona
$202K -$2.48K -148 -1%
FGP
107
Freestone Grove Partners
California
$201K +$49.6K +2,961 +28%
State Board of Administration of Florida Retirement System
108
State Board of Administration of Florida Retirement System
Florida
$201K – – –
AB
109
Amalgamated Bank
New York
$200K -$6.63K -396 -3%
Cerity Partners
110
Cerity Partners
New York
$198K -$54.3K -3,243 -20%
Simplex Trading
111
Simplex Trading
Illinois
$194K +$211K +12,587 +3,506%
Verition Fund Management
112
Verition Fund Management
Connecticut
$172K -$470K -28,065 -71%
IP
113
Isthmus Partners
Wisconsin
$172K +$4.17K +249 +2%
State of Tennessee, Department of Treasury
114
State of Tennessee, Department of Treasury
Tennessee
$171K – – –
COPPSERS
115
Commonwealth of Pennsylvania Public School Employees Retirement System
Pennsylvania
$168K +$19.8K +1,183 +12%
PFSRSONJ
116
Police & Firemen's Retirement System of New Jersey
New Jersey
$166K +$28.9K +1,725 +18%
ProShare Advisors
117
ProShare Advisors
Maryland
$166K -$51.9K -3,098 -22%
Zurich Cantonal Bank
118
Zurich Cantonal Bank
Switzerland
$162K – – –
OPERF
119
Oregon Public Employees Retirement Fund
Oregon
$161K -$5.02K -300 -3%
EI
120
Ethic Inc
New York
$159K -$64.7K -3,863 -27%
CWM
121
CIBC World Markets
New York
$156K +$174K +10,419 New
Schroder Investment Management Group
122
Schroder Investment Management Group
United Kingdom
$156K +$170K +10,184 New
XT
123
XTX Topco
Cayman Islands
$155K +$173K +10,340 New
OC
124
Oppenheimer & Co
New York
$151K – – –
PEAK6
125
PEAK6
Illinois
$144K +$161K +9,612 New
3 4
5
6 7

CLB Hedge Fund Activity: Q1 2025 in Review

195 of the 7,457 institutional investors tracked by Wall St. Rank reported a position in Core Laboratories (CLB) for Q1 2025, worth a combined $762M — down 13% from $880M a quarter earlier.

Sellers outnumbered buyers: 33 funds closed out of CLB and 21 opened new positions — a net loss of 12 holders — while 77 trimmed existing stakes and 56 added.

The largest buyer was Ariel Investments, adding an estimated $11.9M. The largest seller was BlackRock, cutting an estimated $6.91M.

  • 195 institutional investors held Core Laboratories (CLB) as of Q1 2025, down from 209 in Q4 2024.
  • Funds reported $762M of Core Laboratories stock for Q1 2025, down 13% quarter-over-quarter.
  • 21 funds opened new Core Laboratories positions in Q1 2025 and 33 closed out, a net change of -12 holders.
  • The largest Core Laboratories buyer in Q1 2025 was Ariel Investments, an estimated $11.9M added.
  • The largest Core Laboratories seller in Q1 2025 was BlackRock, an estimated $6.91M sold.

Based on aggregated 13F filings for Q1 2025.