Core Laboratories Inc. 13F holders
187 funds reported a position in Core Laboratories Inc. in their 13F for the quarter ended 30 June 2026, together 52.7 million shares worth $612.8 million. Against the quarter before, 25 opened a position, 57 added, 69 trimmed and 31 sold out; together they bought a net 2.2 million shares. The largest holders: Ariel Investments, LLC, BlackRock, Inc. and Disciplined Growth Investors Inc.
Funds holding187-4 on Q1 2026
Shares they held52.7Mworth $612.8 million
Net bought on the quarter2.2M sharesabout $25.2 million at the funds' values
Funds buying to selling82 to 100opened or added, to cut or sold
Opened 25Added 57Held 33Trimmed 69Sold out 31
What each fund did in CLB against its 13F for the quarter before; a change under 0.1% of a holding counts as held
Funds reporting a position in CLB in their 13F, each quarter; hover a bar for the shares they held
Filed so far for the quarter to 30 September 2026
3,241 funds have filed their 13F for the quarter so far; the rest are due by 16 November 2026. Of those, 28 reported a position in Core Laboratories Inc.: 5 opened one, 6 added, 11 trimmed and 12 sold out, a net 1.6 million shares sold.
The largest moves in the name among the funds that have filed, against each fund's previous 13F.
The well-known funds
Of the 44 funds followed here, 4 reported a position in Core Laboratories Inc. in a 13F for the quarter ended 30 June 2026. The largest: Geode Capital Management, 1.2 million shares worth $13.9 million, 0.0% of its reported book. Sold out: Millennium Management. In the quarter, 2 funds added or opened a position and 3 trimmed or sold out; together they bought a net 208,977 shares, about $2.4 million at the funds' own value per share on 30 June 2026. A change under 0.1% of a holding counts as held.
| Fund | Shares | Value | Of its book | Change on the quarter | Status | Quarter ended | Filing |
|---|---|---|---|---|---|---|---|
| Geode Capital Management | 1,193,824 | $13.9 million | 0.0% | +55,866 | added | 30 June 2026 | 13F |
| Citadel Advisors | 371,615 | $4.3 million | 0.0% | +216,815 | added | 30 June 2026 | 13F |
| Renaissance Technologies | 14,500 | $168,925 | 0.0% | -36,103 | trimmed | 30 June 2026 | 13F |
| FMR LLC | 4,488 | $52,280 | 0.0% | -3,799 | trimmed | 30 June 2026 | 13F |
| Millennium Management | 0 | $0 | 0.0% | -23,802 | exited | 30 June 2026 | 13F |
Value is what the fund reported.
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Change is shares against the fund's previous 13F; a fund with one filing read shows no change. 13Fs cover long US positions of managers above $100 million and are filed up to 45 days after the quarter.The largest holders
| Fund | Shares | Share of all | Value | Of its book | Change in shares | Filing |
|---|---|---|---|---|---|---|
| Ariel Investments, LLC | 14,074,945 | 26.71% | $164.0 million | 1.64% | +904,557 | 13F |
| BlackRock, Inc. | 7,460,118 | 14.16% | $86.9 million | 0.00% | +251,615 | 13F |
| Disciplined Growth Investors Inc. | 3,042,177 | 5.77% | $35.4 million | 0.60% | -1,894,938 | 13F |
| Earnest Partners LLC | 2,941,004 | 5.58% | $34.3 million | 0.12% | -114,992 | 13F |
| State Street Corp. | 2,176,480 | 4.13% | $25.4 million | 0.00% | +115,943 | 13F |
| CWA Asset Management Group, LLC | 1,755,085 | 3.33% | $20.4 million | 0.63% | +14,084 | 13F |
| Vanguard Capital Management LLC | 1,590,521 | 3.02% | $18.5 million | 0.00% | -29,342 | 13F |
| Dimensional Fund Advisors LP | 1,548,203 | 2.94% | $18.0 million | 0.00% | +195,874 | 13F |
| Schroder Investment Management Group | 1,543,638 | 2.93% | $16.9 million | 0.01% | new | 13F |
| Vanguard Portfolio Management LLC | 1,275,421 | 2.42% | $14.9 million | 0.00% | +20,585 | 13F |
| Geode Capital Management, LLC | 1,193,824 | 2.27% | $13.9 million | 0.00% | +55,866 | 13F |
| Gendell Jeffrey L | 1,090,973 | 2.07% | $12.7 million | 0.12% | +442,513 | 13F |
| Heartland Advisors Inc. | 1,058,311 | 2.01% | $12.3 million | 0.55% | +908,311 | 13F |
| Goldman Sachs Group Inc. | 751,643 | 1.43% | $8.8 million | 0.00% | -97,258 | 13F |
| Evergreen Capital Management LLC | 669,508 | 1.27% | $7.8 million | 0.14% | new | 13F |
| Morgan Stanley | 656,146 | 1.25% | $7.6 million | 0.00% | +209,364 | 13F |
| Northern Trust Corp. | 608,202 | 1.15% | $7.1 million | 0.00% | +42,916 | 13F |
| Charles Schwab Investment Management Inc. | 565,065 | 1.07% | $6.6 million | 0.00% | -121,885 | 13F |
| T. Rowe Price Investment Management, Inc. | 485,032 | 0.92% | $5.7 million | 0.00% | -618,863 | 13F |
| UBS Group AG | 461,777 | 0.88% | $5.4 million | 0.00% | +30,124 | 13F |
| Fisher Asset Management, LLC | 447,949 | 0.85% | $5.2 million | 0.00% | -288,798 | 13F |
| Bank of New York Mellon Corp | 401,283 | 0.76% | $4.7 million | 0.00% | -1,801 | 13F |
| Van Eck Associates Corp. | 393,682 | 0.75% | $4.6 million | 0.00% | -78,784 | 13F |
| Citadel Advisors LLC | 371,615 | 0.71% | $4.3 million | 0.00% | +216,815 | 13F |
| Vanguard Fiduciary Trust Co. | 296,584 | 0.56% | $3.5 million | 0.00% | +7,022 | 13F |
| Principal Financial Group Inc. | 272,191 | 0.52% | $3.2 million | 0.00% | +370 | 13F |
| MAC Alpha Capital Management, LP | 262,894 | 0.50% | $3.1 million | 1.44% | -20,302 | 13F |
| D. E. Shaw & Co., Inc. | 248,070 | 0.47% | $2.9 million | 0.00% | +129,644 | 13F |
| Advisors Capital Management, LLC | 237,398 | 0.45% | $2.8 million | 0.03% | -51,232 | 13F |
| Hotchkis & Wiley Capital Management LLC | 235,015 | 0.45% | $2.7 million | 0.01% | +54,880 | 13F |
| Envestnet Asset Management Inc. | 227,236 | 0.43% | $2.6 million | 0.00% | +3,360 | 13F |
| Invesco Ltd. | 202,140 | 0.38% | $2.4 million | 0.00% | -29,861 | 13F |
| Russell Investments Group, Ltd. | 193,517 | 0.37% | $2.3 million | 0.00% | +45,180 | 13F |
| Nuveen, LLC | 181,278 | 0.34% | $2.1 million | 0.00% | +31,155 | 13F |
| Archon Capital Management LLC | 178,700 | 0.34% | $2.1 million | 0.84% | new | 13F |
| Public Sector Pension Investment Board | 158,395 | 0.30% | $1.8 million | 0.01% | -8,193 | 13F |
| Wells Fargo & Company | 158,391 | 0.30% | $1.8 million | 0.00% | -31,925 | 13F |
| Legal & General Group Plc | 122,575 | 0.23% | $1.4 million | 0.00% | +3,397 | 13F |
| Jump Financial, LLC | 120,051 | 0.23% | $1.4 million | 0.01% | +23,851 | 13F |
| Rhumbline Advisers | 114,672 | 0.22% | $1.3 million | 0.00% | -24,462 | 13F |
| Creative Planning | 102,806 | 0.20% | $1.2 million | 0.00% | +40,335 | 13F |
| Rice Hall James & Associates, LLC | 101,648 | 0.19% | $1.2 million | 0.06% | +2,552 | 13F |
| Ameriprise Financial Inc. | 98,959 | 0.19% | $1.2 million | 0.00% | -1,579 | 13F |
| American Century Companies Inc. | 94,701 | 0.18% | $1.1 million | 0.00% | -352,396 | 13F |
| UBS AM, a distinct business unit of UBS Asset Management Americas LLC | 92,916 | 0.18% | $1.1 million | 0.00% | -3,986 | 13F |
| Swiss National Bank | 92,500 | 0.18% | $1.1 million | 0.00% | no change | 13F |
| Bank of America Corp. | 87,285 | 0.17% | $1.0 million | 0.00% | -137,333 | 13F |
| XTX Topco Ltd | 85,331 | 0.16% | $994,106 | 0.01% | new | 13F |
| Price T Rowe Associates Inc. | 84,194 | 0.16% | $981,000 | 0.00% | +27,052 | 13F |
| Tidal Investments LLC | 80,853 | 0.15% | $941,937 | 0.00% | +9,652 | 13F |
The 50 largest of the 187 funds that reported a position in CLB in their 13F for the quarter ended 30 June 2026, by the value each reported.
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Share of all is the fund's part of all the shares the funds reported. Change is shares against the fund's 13F for the quarter before. A 13F lists a manager's long positions in US-listed shares at the quarter's end. What is a 13F?Options the funds reported on CLB
| Fund | Option | Shares under the options | Value of those shares | Quarter ended | Filing |
|---|---|---|---|---|---|
| Citadel Advisors | Calls | 10,300 | $119,995 | 30 June 2026 | 13F |
A 13F lists calls and puts by the shares they cover and what those shares were worth at the quarter's end, not what the options cost.
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They are not counted in the holdings above. A put gains when the stock falls, a call when it rises, and a fund may hold either to hedge.Schedule 13D and 13G filed on the name, last twelve months
| Filed | Schedule | Who | Holding | Of the class | Event date | Rule or purpose | Filing |
|---|---|---|---|---|---|---|---|
| 14 August 2026 | 13G/A | Disciplined Growth Investors Inc and 1 other | 3.0 million | 6.6% | 30 June 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 14 August 2026 | 13G/A | Ariel Investments, LLC and 1 other | 14.1 million | 30.5% | 30 June 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 6 August 2026 | 13G/A | BlackRock, Inc. and 1 other | 3.8 million | 8.3% | 31 July 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 15 May 2026 | 13G/A | Disciplined Growth Investors Inc and 1 other | 4.9 million | 10.7% | 31 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 26 March 2026 | 13G/A | The Vanguard Group and 1 other | 0 | 0.0% | 13 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 17 February 2026 | 13G/A | Disciplined Growth Investors Inc and 1 other | 5.2 million | 11.1% | 31 December 2025 | passive, institutional (13d-1(b)) | EDGAR |
| 12 February 2026 | 13G/A | Earnest Partners LLC and 1 other | 3.2 million | 6.9% | 31 December 2025 | passive, institutional (13d-1(b)) | EDGAR |
| 14 November 2025 | 13G/A | Disciplined Growth Investors Inc and 1 other | 6.0 million | 12.8% | 30 September 2025 | passive, institutional (13d-1(b)) | EDGAR |
| 14 November 2025 | 13G/A | Ariel Investments, LLC and 1 other | 13.8 million | 29.4% | 30 September 2025 | passive, institutional (13d-1(b)) | EDGAR |
| 30 October 2025 | 13G/A | The Vanguard Group and 1 other | 3.0 million | 6.5% | 30 September 2025 | passive, institutional (13d-1(b)) | EDGAR |
A Schedule 13D is filed by anyone who crosses 5% of a class with intent to influence; a 13G by a passive holder.
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Amendments (/A) report a change, including an exit to zero. Holding and percentage are as the filer stated them on the cover page; the purpose is the filer's own words, cut short. 13D and 13GFails to deliver
| Settlement date | Shares failed | Price | File |
|---|---|---|---|
| 29 September 2026 | 752 | $10.03 | SEC |
| 23 September 2026 | 60 | $10.94 | SEC |
| 18 September 2026 | 63 | $11.40 | SEC |
| 16 September 2026 | 444 | $12.26 | SEC |
| 14 September 2026 | 86 | $12.50 | SEC |
| 8 September 2026 | 42 | $12.54 | SEC |
| 4 September 2026 | 3,085 | $12.53 | SEC |
| 2 September 2026 | 1,730 | $12.39 | SEC |
| 31 August 2026 | 859 | $12.36 | SEC |
| 27 August 2026 | 2 | $11.99 | SEC |
| 26 August 2026 | 5,195 | $12.06 | SEC |
| 25 August 2026 | 6,199 | $12.05 | SEC |
| 21 August 2026 | 2,859 | $12.29 | SEC |
| 20 August 2026 | 821 | $12.65 | SEC |
| 19 August 2026 | 1,926 | $12.52 | SEC |
| 17 August 2026 | 3,406 | $12.45 | SEC |
Shares that failed to deliver at settlement, per day, from the SEC's half-month files, which arrive about two weeks after the period.