Marex UK HoldingsMRX
13F holders, Q2 2025 (June 30)194holders +71
91new positions
17sold out
7famous investors
$39.47avg. 13F price*
At the end of Q2 2025, 194 institutions reported holding Marex UK Holdings Ltd. (MRX) in their 13F filings, up 71 from Q1 2025. 91 opened new positions and 17 sold out. The largest holders were Capital International Investors ($137.7M), BlackRock, Inc. ($99.9M) and Granahan Investment Management, LLC ($82.0M). 7 famous investors held it, including George Soros (0.1% of Soros Fund Management's portfolio), Paul Tudor Jones (0.1% of Tudor Investment Corporation's portfolio) and Israel Englander (0.0% of Millennium Management's portfolio).
- Company
- Marex UK Holdings Ltd.
- Filed as
- MAREX GROUP PLC (Q2 2025)
- CUSIP
- G5S37H101
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2025 → Q2 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 91 | $536.0M |
| Exits | 17 | $81.3M |
All 13F filers, Q1 2025 → Q2 2025: 27,797,623 shares bought and 4,469,340 shares sold, net +23,328,283 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 194 holders
| Capital International Investors | 0.02% | Add +14.9% | 3,488,093 | $137.7M |
| BlackRock, Inc. | 0.00% | Add +218.8% | 2,530,560 | $99.9M |
| Granahan Investment Management, LLC | 3.34% | Reduce -1.9% | 2,077,153 | $82.0M |
| Loomis Sayles & Co. L P | 0.09% | Add +21.6% | 1,767,432 | $69.8M |
| Invesco Ltd. | 0.01% | New | 1,630,571 | $64.4M |
| Grandeur Peak Global Advisors, LLC | 7.08% | Add +15.0% | 1,489,309 | $58.8M |
| Jennison Associates LLC | 0.03% | Reduce -8.7% | 1,428,654 | $56.4M |
| Alliancebernstein L.P. | 0.02% | New | 1,339,056 | $52.9M |
| Morgan Stanley | 0.00% | Add +27.7% | 1,277,855 | $50.4M |
| Marshall Wace, LLP | 0.06% | Add +266.3% | 1,260,305 | $49.7M |
| Adage Capital Partners Gp, L.L.C. | 0.07% | Add +487.1% | 1,078,643 | $42.6M |
| Two Sigma Investments, LP | 0.08% | Add +61.5% | 1,059,119 | $41.8M |
| Jefferies Financial Group Inc. | 0.71% | New | 1,038,967 | $41.0M |
| Millennium Management | 0.04% | Add +107.4% | 1,024,477 | $40.4M |
| Citadel Advisors | 0.03% | Add +472.8% | 979,574 | $38.7M |
| Royce & Associates LP | 0.39% | Reduce -34.1% | 958,934 | $37.8M |
| Two Sigma Advisers, LP | 0.07% | Add +41.4% | 915,100 | $36.1M |
| Ameriprise Financial Inc. | 0.01% | New | 852,308 | $33.6M |
| Thornburg Investment Management Inc. | 0.42% | Add +19.6% | 822,730 | $32.5M |
| William Blair Investment Management, LLC | 0.08% | Reduce -51.6% | 810,791 | $32.0M |
| Principal Financial Group Inc. | 0.02% | Add +73.8% | 789,197 | $31.1M |
| JPMorgan Chase & Co. | 0.00% | Add +106.4% | 777,615 | $30.7M |
| Driehaus Capital Management LLC | 0.24% | New | 753,652 | $29.7M |
| Healthcare of Ontario Pension Plan Trust Fund | 0.06% | Add +140.0% | 720,000 | $28.4M |
| Allspring Global Investments Holdings, LLC | 0.05% | Reduce -2.0% | 696,836 | $27.3M |
| Norges Bank | 0.00% | Add +1274.0% | 687,000 | $27.1M |
| Qube Research & Technologies Ltd | 0.04% | Add +204.6% | 652,464 | $25.8M |
| Royal Bank of Canada | 0.00% | Add +2637354.2% | 632,989 | $25.0M |
| Victory Capital Management Inc. | 0.02% | New | 617,355 | $24.4M |
| Burkehill Global Management, LP | 1.75% | New | 600,000 | $23.7M |
| Voloridge Investment Management, LLC | 0.08% | Add +134.1% | 567,573 | $22.4M |
| Westwood Holdings Group Inc. | 0.15% | New | 533,696 | $21.1M |
| Balyasny Asset Management L.P. | 0.05% | New | 523,893 | $20.7M |
| Artisan Partners Limited Partnership | 0.03% | New | 503,957 | $19.9M |
| Samlyn Capital, LLC | 0.28% | New | 486,847 | $19.2M |
| WCM Investment Management, LLC | 0.04% | New | 448,113 | $17.9M |
| Seven Grand Managers, LLC | 2.11% | Add +155.1% | 446,374 | $17.6M |
| Geode Capital Management, LLC | 0.00% | Add +598.6% | 444,276 | $17.5M |
| Tudor Investment Corporation | 0.13% | Add +88.2% | 431,572 | $17.0M |
| Barclays PLC | 0.01% | Add +2109.3% | 422,140 | $16.7M |
| Bank of America Corp. | 0.00% | Reduce -8.5% | 421,453 | $16.6M |
| Renaissance Technologies | 0.02% | Add +137.1% | 421,087 | $16.6M |
| State Street Corp. | 0.00% | New | 411,091 | $16.2M |
| Engle Capital Management, L.P. | 4.83% | Add +350.0% | 405,600 | $16.0M |
| Fortress Investment Group LLC | 2.28% | Add +276.4% | 400,000 | $15.8M |
| BNP Paribas Financial Markets | 0.01% | Add +111.2% | 398,555 | $15.7M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -1.0% | 396,145 | $15.6M |
| D. E. Shaw & Co. | 0.01% | New | 337,193 | $13.3M |
| Cubist Systematic Strategies, LLC | 0.14% | Add +74.7% | 336,724 | $13.3M |
| Alyeska Investment Group, L.P. | 0.04% | New | 311,969 | $12.3M |
| Zimmer Partners, LP | 0.27% | New | 300,000 | $11.8M |
| Sei Investments Co. | 0.01% | Add +699.0% | 295,735 | $11.7M |
| Manufacturers Life Insurance Company, The | 0.01% | New | 295,356 | $11.7M |
| Lord, Abbett & Co. LLC | 0.04% | Reduce -13.9% | 277,775 | $11.0M |
| Bank of New York Mellon Corp | 0.00% | New | 261,956 | $10.3M |
| Jump Financial, LLC | 0.12% | Add +2856.2% | 245,362 | $9.7M |
| Ghisallo Capital Management LLC | 0.23% | Add +782.4% | 220,600 | $8.7M |
| Russell Investments Group, Ltd. | 0.01% | Reduce -29.1% | 217,481 | $8.6M |
| Vanguard Group Inc. | 0.00% | New | 216,000 | $8.5M |
| Nuveen, LLC | 0.00% | Add +47.9% | 203,074 | $8.0M |
| UBS Group AG | 0.00% | Add +311.5% | 200,794 | $7.9M |
| Renaissance Group LLC | 0.30% | Reduce -18.4% | 195,412 | $7.7M |
| Northern Trust Corp. | 0.00% | New | 181,469 | $7.2M |
| Moody Aldrich Partners LLC | 1.33% | Add +41.1% | 173,966 | $6.9M |
| Engineers Gate Manager LP | 0.08% | Add +474.9% | 164,929 | $6.5M |
| FMR LLC | 0.00% | New | 154,106 | $6.1M |
| Moody National Bank Trust Division | 0.54% | Add +2.9% | 149,940 | $5.9M |
| State of Wisconsin Investment Board | 0.01% | No change | 147,858 | $5.8M |
| Jain Global LLC | 0.10% | New | 147,180 | $5.8M |
| Quantbot Technologies LP | 0.14% | Add +151.8% | 136,947 | $5.4M |
| Soros Fund Management | 0.13% | New | 124,476 | $4.9M |
| Twinbeech Capital LP | 0.11% | New | 123,146 | $4.9M |
| State of Tennessee, Department of Treasury | 0.02% | Reduce -13.2% | 117,050 | $4.6M |
| Robeco Institutional Asset Management B.V. | 0.01% | New | 95,754 | $3.8M |
| Wells Fargo & Company | 0.00% | Add +375.0% | 91,497 | $3.6M |
| Point72 Asset Management | 0.01% | Add +98.0% | 90,691 | $3.6M |
| Monashee Investment Management LLC | 1.95% | New | 90,000 | $3.6M |
| Portolan Capital Management, LLC | 0.21% | Reduce -51.9% | 83,759 | $3.3M |
| Susquehanna International Group, LLP | 0.00% | Add +133.7% | 80,963 | $3.2M |
| Charles Schwab Investment Management Inc. | 0.00% | New | 80,223 | $3.2M |
| PDT Partners, LLC | 0.17% | Add +33.9% | 76,305 | $3.0M |
| Freestone Grove Partners LP | 0.02% | New | 75,000 | $3.0M |
| Cantor Fitzgerald, L. P. | 0.07% | Reduce -4.2% | 72,500 | $2.9M |
| Lazard Asset Management LLC | 0.00% | New | 70,224 | $2.8M |
| Envestnet Asset Management Inc. | 0.00% | Add +18.8% | 70,007 | $2.8M |
| New York State Common Retirement Fund | 0.00% | New | 67,038 | $2.6M |
| Wellington Management Group LLP | 0.00% | Reduce -75.8% | 63,806 | $2.5M |
| FJ Capital Management LLC | 0.26% | New | 62,696 | $2.5M |
| Schonfeld Strategic Advisors LLC | 0.02% | New | 61,366 | $2.4M |
| Legal & General Group Plc | 0.00% | Reduce -39.9% | 60,975 | $2.4M |
| Raymond James Financial Inc. | 0.00% | Add +144.0% | 56,294 | $2.2M |
| WINTON GROUP Ltd | 0.11% | Add +526.5% | 54,230 | $2.1M |
| Global IMC LLC | 0.52% | New | 50,561 | $2.0M |
| Quadrature Capital Ltd | 0.03% | Add +475.9% | 47,261 | $1.9M |
| Rhumbline Advisers | 0.00% | New | 45,971 | $1.8M |
| Graham Capital Management, L.P. | 0.06% | New | 45,896 | $1.8M |
| State of New Jersey Common Pension Fund D | 0.01% | Reduce -16.5% | 43,316 | $1.7M |
| Numerai GP LLC | 0.23% | Add +594.1% | 40,878 | $1.6M |
| Jane Street Group, LLC | 0.00% | Add +38.1% | 40,676 | $1.6M |
| Calamos Advisors LLC | 0.01% | Reduce -55.0% | 38,075 | $1.5M |
| D.A. Davidson & Co. | 0.01% | New | 34,557 | $1.4M |
| Dynamic Technology Lab Private Ltd | 0.17% | New | 31,687 | $1.3M |
| Militia Capital Partners, LP | 0.56% | New | 30,000 | $1.2M |
| Algert Global LLC | 0.02% | New | 29,346 | $1.2M |
| Neo Ivy Capital Management | 0.36% | New | 28,520 | $1.1M |
| Gsa Capital Partners LLP | 0.07% | Add +254.8% | 26,102 | $1.0M |
| Verition Fund Management LLC | 0.01% | Add +195.5% | 25,829 | $1.0M |
| Longaeva Partners L.P. | 0.24% | New | 25,000 | $987K |
| Cinctive Capital Management LP | 0.06% | New | 25,000 | $987K |
| Informed Momentum Co LLC | 0.14% | New | 23,694 | $935K |
| Polar Asset Management Partners Inc. | 0.03% | New | 22,800 | $900K |
| SG Americas Securities, LLC | 0.00% | New | 22,365 | $883K |
| Glenmede Investment Management, LP | 0.00% | — | 21,735 | $858K |
| Riverwater Partners LLC | 0.40% | New | 21,712 | $857K |
| Los Angeles Capital Management LLC | 0.00% | New | 21,346 | $843K |
| Occudo Quantitative Strategies LP | 0.09% | Reduce -1.1% | 20,533 | $810K |
| Harbour Capital Advisors, LLC | 0.17% | Reduce -0.4% | 20,720 | $806K |
| Y-Intercept (Hong Kong) Ltd | 0.02% | Add +66.8% | 20,251 | $799K |
| US Bancorp \de | 0.00% | Add +598.0% | 20,138 | $795K |
| Deutsche Bank AG | 0.00% | New | 20,041 | $791K |
| Aigen Investment Management, LP | 0.10% | New | 19,219 | $759K |
| MetLife Investment Management, LLC | 0.00% | New | 19,213 | $758K |
| Scientech Research LLC | 0.18% | New | 18,866 | $745K |
| Polen Capital Management LLC | 0.00% | New | 18,523 | $731K |
| STRS Ohio | 0.00% | New | 18,100 | $714K |
| Entropy Technologies, LP | 0.06% | Add +20.9% | 17,900 | $707K |
| Harbour Investments, Inc. | 0.02% | New | 17,648 | $697K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | New | 17,450 | $689K |
| T. Rowe Price Associates Inc. | 0.00% | New | 15,899 | $628K |
| Intech Investment Management LLC | 0.01% | New | 15,137 | $597K |
| Spire Wealth Management | 0.02% | New | 14,970 | $591K |
| Corsair Capital Management, L.P. | 0.11% | No change | 14,932 | $589K |
| Walleye Capital LLC | 0.01% | New | 14,600 | $576K |
| Napa Wealth Management | 0.26% | Add +128.3% | 13,785 | $544K |
| Yorktown Management & Research Co Inc | 0.51% | Add +128.0% | 13,450 | $531K |
| Citigroup Inc. | 0.00% | Add +596.8% | 12,585 | $497K |
| Magnetar Financial LLC | 0.00% | New | 12,194 | $481K |
| Bantamac Capital, LLC | 0.16% | Reduce -8.8% | 11,159 | $440K |
| Fox Run Management, L.L.C. | 0.07% | New | 10,873 | $429K |
| Mackenzie Financial Corp. | 0.00% | Reduce -28.7% | 10,833 | $428K |
| Franklin Resources Inc. | 0.00% | Reduce -29.9% | 10,668 | $421K |
| Csenge Advisory Group | 0.02% | New | 9,565 | $413K |
| Janney Capital Management LLC | 0.03% | Reduce -27.6% | 10,137 | $400K |
| Petrus Trust Company, LTA | 0.04% | New | 10,078 | $398K |
| Clear Harbor Asset Management, LLC | 0.03% | Add +11.6% | 8,982 | $355K |
| Voya Investment Management LLC | 0.00% | New | 8,696 | $343K |
| Keybank National Association | 0.00% | Reduce -10.2% | 8,664 | $342K |
| Squarepoint Ops LLC | 0.00% | Add +31.7% | 7,898 | $312K |
| Orion Porfolio Solutions, LLC | 0.00% | Add +26.4% | 7,828 | $309K |
| Limestone Investment Advisors LP | 0.13% | — | 7,600 | $300K |
| Verdence Capital Advisors LLC | 0.02% | New | 7,595 | $300K |
| Virtu Financial LLC | 0.01% | New | 7,387 | $292K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | New | 7,364 | $291K |
| LPL Financial LLC | 0.00% | Reduce -11.7% | 7,023 | $277K |
| ProShare Advisors LLC | 0.00% | New | 6,530 | $258K |
| PharVision Advisers, LLC | 0.37% | New | 6,458 | $255K |
| Nomura Holdings Inc. | 0.00% | New | 5,200 | $205K |
| Sandia Investment Management LP | 0.51% | Reduce -33.3% | 5,000 | $197K |
| Simplex Trading, LLC | 0.00% | New | 3,888 | $153K |
| Ameritas Investment Partners, Inc. | 0.00% | New | 3,251 | $128K |
| Lanark Financial, Inc. | 0.01% | New | 3,239 | $127K |
| Group One Trading LLC | 0.00% | Add +119.1% | 2,943 | $116K |
| Tower Research Capital LLC (TRC) | 0.00% | New | 2,827 | $112K |
| Steward Partners Investment Advisory, LLC | 0.00% | Reduce -15.3% | 2,825 | $112K |
| Gen-Wealth Partners Inc | 0.04% | No change | 2,575 | $102K |
| Quarry LP | 0.02% | Add +81.9% | 2,132 | $84K |
| California State Teachers Retirement System | 0.00% | New | 1,987 | $78K |
| Assetmark, Inc. | 0.00% | Add +19.8% | 1,740 | $69K |
| SBI Securities Co., Ltd. | 0.00% | Add +52.7% | 1,455 | $57K |
| Osaic Holdings, Inc. | 0.00% | Add +573.2% | 1,380 | $54K |
| Amalgamated Bank | 0.00% | New | 1,088 | $43K |
| Bessemer Group Inc. | 0.00% | New | 443 | $17K |
| Hughes Financial Services, LLC | 0.00% | Reduce -66.1% | 475 | $17K |
| Jones Financial Companies LLLP | 0.00% | New | 360 | $14K |
| Sterling Capital Management LLC | 0.00% | New | 323 | $13K |
| Nisa Investment Advisors, LLC | 0.00% | New | 280 | $11K |
| Park Place Capital Corp | 0.00% | Reduce -34.4% | 273 | $11K |
| Annis Gardner Whiting Capital Advisors, LLC | 0.00% | New | 200 | $8K |
| Northwestern Mutual Wealth Management Co. | 0.00% | Add +93.8% | 124 | $5K |
| Bell Investment Advisors, Inc | 0.00% | Reduce -23.0% | 117 | $5K |
| GPS Wealth Strategies Group, LLC | 0.00% | New | 100 | $4K |
| WealthCollab, LLC | 0.00% | No change | 75 | $3K |
| Signaturefd, LLC | 0.00% | New | 75 | $3K |
| Riggs Asset Managment Co. Inc. | 0.00% | New | 63 | $2K |
| Hoey Investments, Inc. | 0.00% | New | 50 | $2K |
| Caitong International Asset Management Co., Ltd | 0.00% | Reduce -57.3% | 44 | $2K |
| CIBC Private Wealth Group LLC | 0.00% | Add +73.9% | 40 | $2K |
| PNC Financial Services Group, Inc. | 0.00% | New | 34 | $1K |
| Larson Financial Group LLC | 0.00% | New | 29 | $1K |
| Principal Securities, Inc. | 0.00% | Add +37.5% | 22 | $868 |
| Rothschild Investment LLC | 0.00% | New | 20 | $789 |
| Physician Wealth Advisors, Inc. | 0.00% | New | 14 | $553 |
| Bogart Wealth, LLC | 0.00% | No change | 12 | $474 |
| Kilter Group LLC | 0.00% | New | 7 | $277 |
"% of holder's portfolio" is MRX's weight in each manager's 13F, not the share of Marex UK Holdings Ltd. the manager owns.