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
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.
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