Core Laboratories Inc
Held by 1 superinvestor (CLB).
Educational data only — not investment advice. 13F positions are self-reported and can lag up to 45 days.
Core Laboratories Inc (CLB) is held by 1 of the superinvestors tracked on Compounder, with a combined $221.1M in reported 13F value. The largest position belongs to John Rogers, where it makes up 2.5% of the portfolio.
Over the latest quarter, 0 of the tracked filers opened a new position in CLB, 0 added to existing ones, 1 trimmed, and 0 sold out entirely.
Holder counts and values reflect the most recent SEC Form 13F filings, through the quarter ended 2026-03-31. Source: SEC EDGAR. A 13F shows only long US-listed positions and can lag the real portfolio by up to 45 days, so this is disclosed long ownership, not a complete picture.
Superinvestors holding this security over the last 8 quarters: 1 → 1.
Early quarters may understate holder counts due to data backfill — read the slope with care.
- Value$221.1MWeight (prev→now)2.4% → 2.5% ▼
Sources· SEC EDGAR 13F as of 2026-05-14
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