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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
Mirae Asset Global ETFs Holdings
76
Mirae Asset Global ETFs Holdings
Hong Kong
$418K +$19.6K +1,170 +4%
Franklin Resources
77
Franklin Resources
California
$413K +$13.1K +782 +3%
SOADOR
78
State of Alaska Department of Revenue
Alaska
$388K -$11.1K -666 -3%
Mackenzie Financial
79
Mackenzie Financial
Ontario, Canada
$368K +$19.6K +1,170 +5%
CF
80
Corebridge Financial
Texas
$367K -$8.1K -484 -2%
FFA
81
Farther Finance Advisors
California
$358K – – –
Amundi
82
Amundi
France
$353K -$112K -6,689 -20%
IMRF
83
Illinois Municipal Retirement Fund
Illinois
$344K -$37.1K -2,219 -9%
LSERS
84
Louisiana State Employees Retirement System
Louisiana
$331K -$10K -600 -3%
PNC Financial Services Group
85
PNC Financial Services Group
Pennsylvania
$329K -$14.8K -882 -4%
SEI Investments
86
SEI Investments
Pennsylvania
$304K +$340K +20,295 New
Janus Henderson Group
87
Janus Henderson Group
United Kingdom
$304K – – –
PIM
88
Platinum Investment Management
Australia
$300K +$250K +14,927 +293%
New York State Teachers Retirement System (NYSTRS)
89
New York State Teachers Retirement System (NYSTRS)
New York
$297K – – –
QCG
90
Quadrant Capital Group
Ohio
$288K +$150K +8,946 +87%
Comerica Bank
91
Comerica Bank
Texas
$272K -$14.6K -873 -5%
YCM
92
Yousif Capital Management
Michigan
$261K -$8.19K -489 -3%
SG Americas Securities
93
SG Americas Securities
New York
$258K -$109K -6,519 -27%
Natixis Advisors
94
Natixis Advisors
Massachusetts
$257K +$288K +17,178 New
Manulife (Manufacturers Life Insurance)
95
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$253K -$65.9K -3,934 -19%
COI
96
Connable Office Inc
Michigan
$247K – – –
IIC
97
Integrated Investment Consultants
Michigan
$241K +$98.7K +5,893 +58%
Jones Financial Companies
98
Jones Financial Companies
Missouri
$237K -$15.1K -899 -5%
ACM
99
Aquatic Capital Management
Illinois
$236K -$147K -8,772 -36%
TRSOTSOK
100
Teachers Retirement System of the State of Kentucky
Kentucky
$231K – – –
2 3
4
5 6

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.