Core Lab (CLB)
Analyzes reservoir rocks and fluids while supplying completion diagnostics and perforating systems.
$10.63
After hours−0.02 (−0.23%)
At close$10.66(−2.61%)
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13F · 13D/G · Form 4
| Institutions | 116.08% | 53.26M shares | |
|---|---|---|---|
| 189 holders · as of Jun 30, 2026 | |||
| Insiders | 1.00% | 460.4K shares | |
| 11 holders · as of Aug 4, 2026 | |||
| Adds to | 117.08% | ||
45.88M company shares as of Sep 23, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing
These groups come from separate filings that can overlap, so they add to 117.08%; nothing is left for Other.
13F, as of Jun 30, 2026
189 holders · 53.26M shares · 32 new positions · 87 increased · 71 reduced · 35 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| Ariel Investments, LLC | 14.07M | 30.67% | +904.6K | Aug 14, 2026 |
| BlackRock, Inc. | 7.46M | 16.26% | +251.6K | Aug 7, 2026 |
| Disciplined Growth Investors Inc /MN | 3.04M | 6.63% | −1.89M | Aug 14, 2026 |
| Earnest Partners LLC | 2.94M | 6.41% | −115.0K | Aug 13, 2026 |
| State Street Corp | 2.18M | 4.74% | +115.9K | Aug 7, 2026 |
| Cwa Asset Management Group, LLC | 1.76M | 3.83% | +14.1K | Jul 14, 2026 |
| Vanguard Capital Management LLC | 1.59M | 3.47% | −29.3K | Aug 13, 2026 |
| Dimensional Fund Advisors LP | 1.55M | 3.37% | +195.9K | Aug 11, 2026 |
13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Ariel Investments, LLC | 29.40% | 13.77M | 13G | Nov 14, 2025 |
| BlackRock, Inc. | 15.50% | 7.26M | 13G | Apr 29, 2025 |
| Disciplined Growth Investors Inc /MN | 10.70% | 4.94M | 13G | May 15, 2026 |
| Earnest Partners LLC | 6.90% | 3.22M | 13G | Feb 12, 2026 |
Form 4
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Jul 31, 2026 | Lawrence Brunodirector, officer: Chairman and CEO | Purchase | 5,000 | $10.78 | 262,438 |
House and Senate disclosures
Not reported.