Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in CLB held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | ARIEL INVESTMENTS, LLC | 13.2M | $221.1M | -3.6% | 28.601% | 2.48% |
| 2 | BlackRock, Inc. | 7.2M | $121.0M | +0.8% | 15.654% | 0.00% |
| 3 | DISCIPLINED GROWTH INVESTORS INC /MN | 4.9M | $82.9M | -4.5% | 10.722% | 1.70% |
| 4 | EARNEST PARTNERS LLC | 3.1M | $51.3M | -5.1% | 6.636% | 0.21% |
| 5 | STATE STREET CORP | 2.1M | $34.6M | +0.9% | 4.475% | 0.00% |
| 6 | CWA Asset Management Group, LLC | 1.7M | $29.2M | +179.7% | 3.781% | 1.18% |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | 1.6M | $27.2M | — | 3.518% | 0.00% |
| 8 | DIMENSIONAL FUND ADVISORS LP | 1.4M | $22.7M | +10.0% | 2.937% | 0.00% |
| 9 | VANGUARD PORTFOLIO MANAGEMENT LLC | 1.3M | $21.1M | — | 2.725% | 0.00% |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | 1.1M | $19.1M | +2.1% | 2.471% | 0.00% |
| 11 | GOLDMAN SACHS GROUP INC | 849K | $14.3M | +0.4% | 1.843% | 0.00% |
| 12 | Fisher Asset Management, LLC | 737K | $12.4M | -4.9% | 1.600% | 0.00% |
| 13 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 687K | $11.5M | -6.9% | 1.492% | 0.00% |
| 14 | GENDELL JEFFREY L | 648K | $10.9M | 0.0% | 1.408% | 0.15% |
| 15 | NORTHERN TRUST CORP | 565K | $9.5M | +4.0% | 1.228% | 0.00% |
| 16 | AMERICAN CENTURY COMPANIES INC | 447K | $7.5M | +21.7% | 0.971% | 0.00% |
| 17 | MORGAN STANLEY | 447K | $7.5M | -7.9% | 0.970% | 0.00% |
| 18 | UBS Group AG | 432K | $7.2M | +4.6% | 0.937% | 0.00% |
| 19 | Bank of New York Mellon Corp | 403K | $6.8M | -2.1% | 0.875% | 0.00% |
| 20 | VANGUARD FIDUCIARY TRUST CO | 290K | $4.9M | — | 0.629% | 0.00% |
| 21 | Advisors Capital Management, LLC | 289K | $4.8M | +4.4% | 0.627% | 0.06% |
| 22 | MAC Alpha Capital Management, LP | 283K | $4.8M | -9.5% | 0.615% | 2.77% |
| 23 | PRINCIPAL FINANCIAL GROUP INC | 272K | $4.6M | -7.4% | 0.590% | 0.00% |
| 24 | Invesco Ltd. | 232K | $3.9M | +13.6% | 0.504% | 0.00% |
| 25 | BANK OF AMERICA CORP /DE/ | 225K | $3.8M | +59.6% | 0.488% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in CLB — a direct measure of their conviction.
Filings activity in CLB during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 186 | +0.0% | 134.94% | +6.83 pp | $818M | +5.3% |
| Q4 2025 | 186 | 1.1% | 128.11% | +22.78 pp | $776M | +22% |
| Q3 2025 | 188 | 2.1% | 105.33% | 32.10 pp | $638M | 23% |
| Q2 2025 | 192 | +0.5% | 137.43% | +16.70 pp | $833M | +14% |
| Q1 2025 | 191 | 7.7% | 120.73% | 18.64 pp | $732M | 13% |
| Q4 2024 | 207 | +11% | 139.37% | 9.14 pp | $845M | 6.2% |
| Q3 2024 | 186 | 4.1% | 148.51% | 17.09 pp | $900M | 10% |
| Q2 2024 | 194 | — | 165.60% | — | $1.00B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying CLB stock.
Based on Q1 2026 13F filings, institutional ownership of Core Laboratories N.V. stands at 134.9%, held across 186 reporting institutions.
ARIEL INVESTMENTS, LLC is the largest reported institutional holder of CLB, with approximately 13,170,388 shares worth $0.22B as of Q1 2026.
Yes — 1 widely-followed marquee investor appear among the top 25 institutional holders of CLB, including Fisher Asset Management, LLC.
Our composite Smart Money Score for CLB is 59 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
26 institutions opened new positions in CLB during Q1 2026, while 26 fully exited. 117 added to existing positions and 40 trimmed.
CLB institutional ownership rose by 6.83 percentage points quarter-over-quarter, with a net change of +0 holders.
The top 10 institutions account for 77.1% of all reported 13F value in CLB, and the top 25 account for 91.0%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Core Laboratories N.V. (CLB) Institutional Ownership