Core Laboratories Ownership | Who Owns Core Laboratories?


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Core Laboratories Ownership Summary


Core Laboratories is owned by 36.79% institutional investors, 1.02% insiders, and 62.19% retail investors. Ariel investments is the largest institutional shareholder, holding 28.99% of CLB shares. Ariel Fund Investor is the top mutual fund, with 11.13% of its assets in Core Laboratories shares.

CLB Ownership Benchmark


TypeName% Inst% Insiders% Retail
StockCore Laboratories36.79%1.02%62.19%
SectorEnergy Stocks 14147.52%14.03%-14061.55%
IndustryOil & Gas Equipment & Services Stocks47.70%12.52%39.79%

Institutional Shareholders


Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
Ariel investments13.77M28.99%$170.24M
Blackrock7.80M16.62%$158.22M
Blackrock funding, inc. /de7.26M15.28%$89.71M
Disciplined growth investors inc /mn5.97M12.57%$73.79M
Earnest partners3.43M7.21%$42.37M
Vanguard group3.05M6.41%$37.67M
State street1.98M4.16%$24.43M
Dimensional fund advisors lp1.11M2.34%$13.73M
Geode capital management1.11M2.33%$13.68M
T. rowe price investment management908.16K1.91%$11.22M

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Ariel investments13.77M1.82%$170.24M
Disciplined growth investors inc /mn5.97M1.34%$73.79M
Bwm planning65.04K0.24%$803.84K
Earnest partners3.43M0.18%$42.37M
Ridgewood investments31.43K0.16%$388.52K
Wintrust investments10.14K0.15%$175.00K
Scout investments256.99K0.14%$5.21M
Gendell jeffrey l569.47K0.13%$7.04M
Pharvision advisers17.68K0.12%$218.47K
Pacific ridge capital partners42.44K0.12%$524.60K

Top Buyers

HolderShares% AssetsChange
Ariel investments13.77M1.82%797.11K
Disciplined growth investors inc /mn5.97M1.34%528.98K
Hrt financial lp349.55K0.02%259.14K
Goldman sachs group296.59K0.00%174.69K
Charles schwab investment management657.24K0.00%116.26K

Top Sellers

HolderShares% AssetsChange
Congress asset management co /ma---1.69M
Vanguard group3.05M0.00%-1.43M
Boston trust walden---610.89K
Fred alger management---544.41K
Royce & associates lp440.44K0.05%-331.92K

New Positions

HolderShares% AssetsChangeValue
Norges bank110.33K0.00%110.33K$1.91M
Balyasny asset management50.86K0.00%50.86K$585.94K
Lido advisors44.77K0.00%44.77K$553.41K
Pacific ridge capital partners42.44K0.12%42.44K$524.60K
Renaissance34.18K0.00%34.18K$422.48K

Sold Out

HolderChange
Tfc financial management-1.00
Frazier financial advisors-4.00
Jfs wealth advisors-6.00
Southstate-7.00
Kohmann bosshard financial services-11.00

Institutional Ownership Trends


DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Sep 30, 202589-52.41%17,479,824-65.96%360.32%39-60.61%36-34.55%
Jun 30, 2025193-1.53%52,138,6322.56%1090.93%9729.33%59-23.38%
Mar 31, 20256-97.13%335,329-99.34%-0.01%2-97.94%4-94.37%
Dec 31, 202497-49.74%19,758,262-61.17%420.36%36-60.00%34-52.78%
Sep 30, 2024191-4.02%50,834,387-1.68%1080.89%89-13.59%7124.56%

Top Mutual Funds Shareholders


HolderShares% HoldingChange
Ariel Fund Investor5.22M11.13%1.56M
iShares Core S&P Small-Cap ETF2.80M5.97%-
Disciplined Growth - Mid Cap Growth1.52M3.24%53.00K
Vanguard US Total Market Shares ETF1.48M3.18%-
Vanguard Total Stock Mkt Idx Inv1.47M3.14%-32.61K
Ariel Appreciation Investor1.37M2.92%-117.27K
Harbor Small Cap Value Instl1.36M2.91%-69.37K
iShares Russell 2000 ETF1.13M2.42%-
Congress Asset Mgt Small Cap Growth1.11M2.38%1.11M
T. Rowe Price US Smlr Cm Eq A USD892.90K1.90%-45.82K

Insider Transactions Trends


DateBuySell
2025 Q4--
2025 Q3--
2025 Q2--
2025 Q1--
2024 Q4--

CLB Ownership FAQ


Who Owns Core Laboratories?

Core Laboratories shareholders are primarily institutional investors at 36.79%, followed by 1.02% insiders and 62.19% retail investors. The average institutional ownership in Core Laboratories's industry, Oil & Gas Equipment & Services Stocks, is 47.70%, which Core Laboratories falls below.

Who owns the most shares of Core Laboratories?

Core Laboratories’s largest shareholders are Ariel investments (13.77M shares, 28.99%), Blackrock (7.8M shares, 16.62%), and Blackrock funding, inc. /de (7.26M shares, 15.28%). Together, they hold 60.89% of Core Laboratories’s total shares outstanding.

Does Blackrock own Core Laboratories?

Yes, BlackRock owns 16.62% of Core Laboratories, totaling 7.8M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 158.22M$. In the last quarter, BlackRock decreased its holdings by -181K shares, a -2.27% change.

Who is Core Laboratories’s biggest shareholder by percentage of total assets invested?

Ariel investments is Core Laboratories’s biggest shareholder by percentage of total assets invested, with 1.82% of its assets in 13.77M Core Laboratories shares, valued at 170.24M$.

Who is the top mutual fund holder of Core Laboratories shares?

Ariel Fund Investor is the top mutual fund holder of Core Laboratories shares, with 11.13% of its total shares outstanding invested in 5.22M Core Laboratories shares.

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