DOSSIER · 13F Holders · Q1 2026Energy · Oil & Gas Field Services, NEC
CLB

CORE LABORATORIES INC

200 institutions still hold CORE LABORATORIES INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 21867A105·Oil & Gas Field Services, NEC·200 13F holders·last filed Mar 31, 2026
Market cap
13F value held
$729M
visible holders
Holders
200
filers reporting
Concentration
30.32%
ARIEL INVESTMENTS, LLC #1
top holder share
AI Holders Summary · Q1 2026

200 institutions reported CLB in Q1 2026. ARIEL INVESTMENTS, LLC leads at 30.3% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
ARIEL INVESTMENTS, LLC
CIK 0000936753
$221M13.2M2.48%Q1 2026
02
BlackRock, Inc.
CIK 0002012383
$121M7.2M0.00%Q1 2026
03
DISCIPLINED GROWTH INVESTORS INC /MN
CIK 0001050442
$83M4.9M1.70%Q1 2026
04
EARNEST PARTNERS LLC
CIK 0001102578
$51M3.1M0.21%Q1 2026
05
STATE STREET CORP
CIK 0000093751
$35M2.1M0.00%Q1 2026
06
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$27M1.6M0.00%Q1 2026
07
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$23M1.4M0.00%Q1 2026
08
Vanguard Portfolio Management
CIK 0002100121· Index
$21M1.3M0.00%Q1 2026
09
CWA Asset Management Group, LLC
CIK 0001667134
$20M1.8M0.62%Q2 2026
10
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$19M1.1M0.00%Q1 2026
11
T. Rowe Price Investment Management, Inc.
CIK 0001897612
$19M1.1M0.01%Q1 2026
12
GOLDMAN SACHS GROUP INC
CIK 0000886982
$14M849K0.00%Q1 2026
13
Fisher Asset Management, LLC
CIK 0000850529
$12M737K0.00%Q1 2026
14
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 0000884546· Index
$12M687K0.00%Q1 2026
15
GENDELL JEFFREY L
CIK 0001056581
$11M648K0.15%Q1 2026
16
NORTHERN TRUST CORP
CIK 0000073124· Index
$9M565K0.00%Q1 2026
17
VAN ECK ASSOCIATES CORP
CIK 0000869178
$8M472K0.01%Q1 2026
18
EVERGREEN CAPITAL MANAGEMENT LLC
CIK 0001260824
$8M670K0.14%Q2 2026
19
AMERICAN CENTURY COMPANIES INC
CIK 0000748054
$8M447K0.00%Q1 2026
20
MORGAN STANLEY
CIK 0000895421
$8M447K0.00%Q1 2026
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Insiders at CORE LABORATORIES INC
Tattoli Mark DamianMurray KatherineCarnes Martha Z.Martinovich Robert FTemeng KwakuKlingensmith Harvey RobertAnastasio CurtTeo Sow Hang