CORE LABORATORIES INC (CLB) Institutional Shareholders
CORE LABORATORIES INC (CLB) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $611.94M in CLB holdings during the latest filing period.
Ariel Appreciation Fund is currently the largest disclosed institutional shareholder of CLB tracked by InsiderSet, reporting ownership valued at approximately $163.97M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $160.45M, representing an estimated loss of -2.15% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 71% of the total disclosed CLB value among the investors covered in this analysis. Major shareholders include Ariel Appreciation Fund, Blackrock, Inc., Disciplined Growth Investors, and several other long-term asset managers with concentrated positions in CORE LABORATORIES INC (CLB).
This page ranks the largest institutional CLB shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
181
Total Reported Value
$611.94M
Largest Holder
Ariel Appreciation Fund
Largest Position
$163.97M
Insider Transactions (90d)
7
Latest Filing Quarter
Q2 2026
New Institutional Positions
60
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Ariel Appreciation Fund | John W. Rogers Jr. | 1.63% | 14,074,945 | $163,973,109 | $160,454,373 | -$3,518,736 | -2.15% |
| Blackrock, Inc. | 0.00% | 7,460,118 | $86,910,369 | $85,045,345 | -$1,865,024 | -2.15% | |
| Disciplined Growth Investors | Fred Martin | 0.60% | 3,042,177 | $35,441,362 | $34,680,818 | -$760,544 | -2.15% |
| Earnest Partners Llc | 0.12% | 2,941,004 | $34,262,697 | $33,527,446 | -$735,251 | -2.15% | |
| State Street Corp | 0.00% | 2,176,480 | $25,355,992 | $24,811,872 | -$544,120 | -2.15% | |
| Cwa Asset Management Group, Llc | 0.63% | 1,755,085 | $20,446,742 | $20,007,969 | -$438,773 | -2.15% | |
| Vanguard Capital Management Llc | 0.00% | 1,590,521 | $18,529,570 | $18,131,939 | -$397,631 | -2.15% | |
| Dimensional Fund Advisors Lp | 0.00% | 1,548,203 | $18,033,152 | $17,649,514 | -$383,638 | -2.13% | |
| Schroder Investment Management Group | 0.01% | 1,543,638 | $16,856,527 | $17,597,473 | +$740,946 | +4.40% | |
| Vanguard Portfolio Management Llc | 0.00% | 1,275,421 | $14,858,655 | $14,539,799 | -$318,856 | -2.15% | |
| Geode Capital Management, Llc | 0.00% | 1,193,824 | $13,911,319 | $13,609,594 | -$301,725 | -2.17% | |
| Gendell Jeffrey L | 0.11% | 1,090,973 | $12,709,835 | $12,437,092 | -$272,743 | -2.15% | |
| Heartland Advisors Inc | 0.55% | 1,058,311 | $12,329,323 | $12,064,745 | -$264,578 | -2.15% | |
| Goldman Sachs Group Inc | 0.00% | 751,643 | $8,756,641 | $8,568,730 | -$187,911 | -2.15% | |
| Evergreen Capital Management Llc | 0.14% | 669,508 | $7,799,769 | $7,632,391 | -$167,378 | -2.15% | |
| Morgan Stanley | 0.00% | 656,146 | $7,644,131 | $7,480,064 | -$164,067 | -2.15% | |
| Northern Trust Corp | 0.00% | 608,202 | $7,085,554 | $6,933,503 | -$152,051 | -2.15% | |
| Charles Schwab Investment Management Inc | 0.00% | 565,065 | $6,583,007 | $6,441,741 | -$141,266 | -2.15% | |
| T. Rowe Price Investment Management, Inc. | 0.00% | 485,032 | $5,651,000 | $5,529,365 | -$121,635 | -2.15% | |
| Ubs Group Ag | 0.00% | 461,777 | $5,379,702 | $5,264,258 | -$115,444 | -2.15% | |
| Fisher Asset Management, Llc | 0.00% | 447,949 | $5,218,605 | $5,106,619 | -$111,986 | -2.15% | |
| Bank Of New York Mellon Corp | 0.00% | 401,283 | $4,674,946 | $4,574,626 | -$100,320 | -2.15% | |
| Van Eck Associates Corp | 0.00% | 393,682 | $4,586,395 | $4,487,975 | -$98,420 | -2.15% | |
| Citadel Advisors Llc | 0.00% | 371,615 | $4,329,315 | $4,236,411 | -$92,904 | -2.15% | |
| Vanguard Fiduciary Trust Co | 0.00% | 296,584 | $3,455,204 | $3,381,058 | -$74,146 | -2.15% | |
| Principal Financial Group Inc | 0.00% | 272,191 | $3,171,025 | $3,102,977 | -$68,048 | -2.15% | |
| Mac Alpha Capital Management, Lp | 1.42% | 262,894 | $3,062,961 | $2,996,992 | -$65,969 | -2.15% | |
| D. E. Shaw & Co., Inc. | 0.00% | 248,070 | $2,890,016 | $2,827,998 | -$62,018 | -2.15% | |
| Advisors Capital Management, Llc | 0.03% | 237,398 | $2,765,687 | $2,706,337 | -$59,350 | -2.15% | |
| Hotchkis & Wiley Capital Management Llc | 0.01% | 235,015 | $2,737,925 | $2,679,171 | -$58,754 | -2.15% | |
| Envestnet Asset Management Inc | 0.00% | 227,236 | $2,647,304 | $2,590,490 | -$56,814 | -2.15% | |
| Invesco Ltd. | 0.00% | 202,140 | $2,354,931 | $2,304,396 | -$50,535 | -2.15% | |
| Russell Investments Group, Ltd. | 0.00% | 193,517 | $2,254,481 | $2,206,094 | -$48,387 | -2.15% | |
| Nuveen, Llc | 0.00% | 181,278 | $2,111,889 | $2,066,569 | -$45,320 | -2.15% | |
| Archon Capital Management Llc | 0.85% | 178,700 | $2,081,855 | $2,037,180 | -$44,675 | -2.15% | |
| Public Sector Pension Investment Board | 0.00% | 158,395 | $1,845,302 | $1,805,703 | -$39,599 | -2.15% | |
| Wells Fargo & Company/Mn | 0.00% | 158,391 | $1,845,258 | $1,805,657 | -$39,601 | -2.15% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.00% | 96,902 | $1,626,983 | $1,104,683 | -$522,300 | -32.10% | |
| Legal & General Group Plc | 0.00% | 122,575 | $1,427,407 | $1,397,355 | -$30,052 | -2.11% | |
| Jump Financial, Llc | 0.01% | 120,051 | $1,398,594 | $1,368,581 | -$30,013 | -2.15% | |
| Rhumbline Advisers | 0.00% | 114,672 | $1,335,913 | $1,307,261 | -$28,652 | -2.14% | |
| Rice Hall James & Associates, Llc | 0.06% | 101,648 | $1,184,199 | $1,158,787 | -$25,412 | -2.15% | |
| Ameriprise Financial Inc | 0.00% | 98,959 | $1,152,872 | $1,128,133 | -$24,739 | -2.15% | |
| American Century Companies Inc | 0.00% | 94,701 | $1,103,267 | $1,079,591 | -$23,676 | -2.15% | |
| Swiss National Bank | 0.00% | 92,500 | $1,077,625 | $1,054,500 | -$23,125 | -2.15% | |
| Bank Of America Corp | 0.00% | 87,285 | $1,016,870 | $995,049 | -$21,821 | -2.15% | |
| Xtx Topco Ltd | 0.01% | 85,331 | $994,106 | $972,773 | -$21,333 | -2.15% | |
| Price T Rowe Associates Inc | 0.00% | 84,194 | $981,000 | $959,812 | -$21,188 | -2.16% | |
| Tidal Investments Llc | 0.00% | 80,853 | $941,937 | $921,724 | -$20,213 | -2.15% | |
| Citigroup Inc | 0.00% | 73,484 | $856,089 | $837,718 | -$18,371 | -2.15% |
Frequently asked questions about CLB
Who owns the most CLB stock?
The largest holders of CLB are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for CORE LABORATORIES INC (CLB).
Is CLB widely held by superinvestors?
Many widely followed stocks like CLB appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly CLB is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.