Core Laboratories Ownership | Who Owns Core Laboratories?
Core Laboratories Ownership Summary
Core Laboratories is owned by 107.99% institutional investors, 1.43% insiders. Ariel investments is the largest institutional shareholder, holding 28.32% of CLB shares. Ariel Fund Investor is the top mutual fund, with 11.75% of its assets in Core Laboratories shares.
CLB Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Core Laboratories | 107.99% | 1.43% | -9.42% |
| Sector | Energy Stocks | 79.40% | 16.36% | 4.25% |
| Industry | Oil & Gas Equipment & Services Stocks | 44.26% | 15.75% | 40.00% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Ariel investments | 13.17M | 28.32% | $221.13M |
| Blackrock | 7.80M | 16.62% | $158.22M |
| Blackrock funding, inc. /de | 7.21M | 15.50% | $121.03M |
| Disciplined growth investors inc /mn | 4.94M | 10.62% | $82.89M |
| Vanguard group | 3.08M | 6.62% | $49.37M |
| Earnest partners | 3.06M | 6.57% | $51.31M |
| State street | 2.06M | 4.43% | $34.60M |
| Cwa asset management group | 1.74M | 3.74% | $29.23M |
| Dimensional fund advisors lp | 1.35M | 2.91% | $22.71M |
| Geode capital management | 1.14M | 2.45% | $19.11M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Ariel investments | 13.17M | 2.48% | $221.13M |
| Disciplined growth investors inc /mn | 4.94M | 1.70% | $82.89M |
| Cwa asset management group | 1.74M | 0.99% | $29.23M |
| Bwm planning | 65.04K | 0.29% | $1.09M |
| Earnest partners | 3.06M | 0.21% | $51.31M |
| Ridgewood investments | 31.43K | 0.16% | $388.52K |
| Pacific ridge capital partners | 44.43K | 0.16% | $746.00K |
| Wintrust investments | 10.14K | 0.15% | $175.00K |
| Gendell jeffrey l | 648.46K | 0.15% | $10.89M |
| Scout investments | 256.99K | 0.14% | $5.21M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Cwa asset management group | 1.74M | 0.99% | 1.12M |
| Vanguard fiduciary trust | 289.56K | 0.00% | 289.56K |
| Heartland advisors | 150.00K | 0.13% | 150.00K |
| Dimensional fund advisors lp | 1.35M | 0.00% | 122.72K |
| Van eck associates | 472.47K | 0.01% | 120.44K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Congress asset management co /ma | - | - | -1.69M |
| Boston trust walden | - | - | -610.89K |
| Fred alger management | - | - | -544.41K |
| Ariel investments | 13.17M | 2.48% | -490.61K |
| Hotchkis & wiley capital management | 180.13K | 0.01% | -370.98K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Vanguard fiduciary trust | 289.56K | 0.00% | 289.56K | $4.86M |
| Heartland advisors | 150.00K | 0.13% | 150.00K | $2.52M |
| Marshall wace, llp | 117.74K | 0.00% | 117.74K | $1.98M |
| Norges bank | 110.33K | 0.00% | 110.33K | $1.91M |
| Balyasny asset management | 50.86K | 0.00% | 50.86K | $585.94K |
Sold Out
| Holder | Change |
|---|---|
| Tfc financial management | -1.00 |
| Frazier financial advisors | -4.00 |
| Jfs wealth advisors | -6.00 |
| Southstate | -7.00 |
| Abound wealth management | -8.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2026 | 185 | -1.07% | 50,215,874 | 0.11% | 107 | 0.93% | 85 | 3.66% | 54 | -28.95% |
| Dec 31, 2025 | 100 | -48.19% | 16,685,248 | -67.44% | 35 | 0.31% | 46 | -50.54% | 33 | -54.79% |
| Sep 30, 2025 | 89 | -52.41% | 17,479,824 | -65.96% | 36 | 0.32% | 39 | -60.61% | 36 | -34.55% |
| Jun 30, 2025 | 193 | -1.53% | 52,138,632 | 2.56% | 109 | 0.93% | 97 | 29.33% | 59 | -23.38% |
| Mar 31, 2025 | 6 | -97.13% | 335,329 | -99.34% | - | 0.01% | 2 | -97.94% | 4 | -94.37% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Ariel Fund Investor | 5.41M | 11.75% | -798.90K |
| iShares Core S&P Small-Cap ETF | 2.84M | 6.17% | 738.00 |
| Ariel Appreciation Investor | 1.51M | 3.29% | - |
| Vanguard US Total Market Shares ETF | 1.48M | 3.18% | - |
| Disciplined Growth - Mid Cap Growth | 1.28M | 2.77% | -103.20K |
| Harbor Small Cap Value Instl | 1.17M | 2.54% | -10.41K |
| iShares Russell 2000 ETF | 1.11M | 2.40% | 9.35K |
| Congress Asset Mgt Small Cap Growth | 1.11M | 2.38% | 1.11M |
| Vanguard Total Stock Mkt Idx Inv | 1.07M | 2.31% | - |
| T. Rowe Price US Smlr Coms Eq A | 933.67K | 2.03% | -4.72K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2025 Q4 | - | - |
| 2025 Q3 | - | - |
| 2025 Q2 | - | - |
| 2025 Q1 | - | - |
| 2024 Q4 | - | - |
CLB Ownership FAQ
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