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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
MC
51
Moors & Cabot
Massachusetts
$1.05M -$26.1K -1,559 -2%
OAM
52
Oppenheimer Asset Management
New York
$1.04M +$191K +11,438 +20%
Citigroup
53
Citigroup
New York
$1M -$8.27K -494 -0.7%
CM
54
CoreCommodity Management
Connecticut
$986K +$874K +52,201 +384%
BP
55
BWM Planning
Texas
$975K – – –
Barclays
56
Barclays
United Kingdom
$962K -$370K -22,126 -26%
DFCM
57
Dark Forest Capital Management
Puerto Rico
$904K +$1.01M +60,340 New
Two Sigma Investments
58
Two Sigma Investments
New York
$782K -$538K -32,117 -38%
TI
59
Tidal Investments
Wisconsin
$765K +$23.8K +1,424 +3%
AllianceBernstein
60
AllianceBernstein
Tennessee
$742K -$1.39K -83 -0.2%
D.E. Shaw & Co
61
D.E. Shaw & Co
New York
$725K -$247K -14,730 -23%
IIM
62
INTECH Investment Management
Florida
$707K +$96.9K +5,787 +14%
Prudential Financial
63
Prudential Financial
New Jersey
$705K -$5.69K -340 -0.7%
JP Morgan Chase
64
JP Morgan Chase
New York
$659K -$1.07M -64,066 -59%
California State Teachers Retirement System (CalSTRS)
65
California State Teachers Retirement System (CalSTRS)
California
$657K – – –
Deutsche Bank
66
Deutsche Bank
Germany
$633K -$68.8K -4,110 -9%
Millennium Management
67
Millennium Management
New York
$632K -$393K -23,453 -36%
T. Rowe Price Associates
68
T. Rowe Price Associates
Maryland
$592K +$42.4K +2,532 +7%
KCM
69
Kornitzer Capital Management
Kansas
$532K – – –
GCP
70
GSA Capital Partners
United Kingdom
$527K +$412K +24,623 +234%
Thrivent Financial for Lutherans
71
Thrivent Financial for Lutherans
Minnesota
$517K -$31.7K -1,895 -5%
RI
72
Ridgewood Investments
New Jersey
$502K +$14.6K +874 +3%
CAPTRUST Financial Advisors
73
CAPTRUST Financial Advisors
North Carolina
$502K -$369K -22,062 -40%
Creative Planning
74
Creative Planning
Kansas
$472K -$415K -24,815 -44%
MIM
75
MetLife Investment Management
New Jersey
$437K -$7.58K -453 -2%
1 2
3
4 5

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.