CORE LABORATORIES INC (CLB) Institutional Ownership Changes & 13F Activity

CORE LABORATORIES INC (CLB) institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Ariel Appreciation Fund, Disciplined Growth Investors, and Renaissance Technologies LLC.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2026Ariel Appreciation FundSell-490,61213,170,388$221,130,814
Q1 2026Disciplined Growth InvestorsSell-229,7994,937,115$82,894,161
Q1 2026Renaissance Technologies LLCSell-132,79750,603$849,624
Q4 2025Disciplined Growth InvestorsSell-802,9465,166,914$82,825,631
Q4 2025Renaissance Technologies LLCBuy149,219183,400$2,939,902
Q4 2025Ariel Appreciation FundSell-112,56813,661,000$218,985,830
Q3 2025Ariel Appreciation FundBuy797,10513,773,568$170,241,300
Q3 2025Disciplined Growth InvestorsBuy528,9765,969,860$73,787,470
Q3 2025Renaissance Technologies LLCBuy6,58134,181$422,477
Q2 2025Ariel Appreciation FundBuy2,634,43812,976,463$149,488,854
Q2 2025Disciplined Growth InvestorsSell-50,8385,440,884$62,678,984
Q1 2025Ariel Appreciation FundBuy709,45510,342,025$155,026,955
Q1 2025Disciplined Growth InvestorsSell-11,9295,491,722$82,320,913
Q4 2024Ariel Appreciation FundSell-412,6869,632,570$166,739,787
Q4 2024Disciplined Growth InvestorsSell-149,9405,503,651$95,268,199
Q3 2024Disciplined Growth InvestorsBuy1,192,8715,653,591$104,761,041
Q3 2024Ariel Appreciation FundSell-247,04010,045,256$186,138,594
Q3 2024Renaissance Technologies LLCSell-18,70027,600$511,428
Q2 2024Disciplined Growth InvestorsBuy3,644,9634,460,720$90,508,009
Q2 2024Ariel Appreciation FundSell-533,36110,292,296$208,830,685
Q1 2024Ariel Appreciation FundBuy1,837,25810,825,657$184,902,222
Q1 2024Disciplined Growth InvestorsBuy63,390815,757$13,933,130
Q1 2024Renaissance Technologies LLCBuy46,30046,300$791
Q4 2023Ariel Appreciation FundSell-75,3198,988,399$158,735,126
Q4 2023Disciplined Growth InvestorsBuy13,983752,367$13,286,801
Q3 2023Ariel Appreciation FundSell-568,0059,063,718$217,619,869
Q3 2023Disciplined Growth InvestorsSell-20,808738,384$17,728,600
Q2 2023Ariel Appreciation FundBuy9,631,7239,631,723$223,937,560
Q2 2023Disciplined Growth InvestorsSell-36,292759,192$17,651,214
Q1 2023Disciplined Growth InvestorsBuy795,484795,484$17,540,422

Frequently asked questions about CLB activity

  • Which institutional owners are buying CLB?

    Institutional owners buying CLB include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in CLB activity?

    "Buy" means an investor increased their reported position in CLB compared to the prior reporting period. This reflects growing exposure to CORE LABORATORIES INC (CLB) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in CLB increasing?

    Institutional interest in CLB can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.

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