Marex UK HoldingsMRX
13F holders, Q1 2025 (March 31)123holders +17
33new positions
18sold out
5famous investors
$35.37avg. 13F price*
At the end of Q1 2025, 123 institutions reported holding Marex UK Holdings Ltd. (MRX) in their 13F filings, up 17 from Q4 2024. 33 opened new positions and 18 sold out. The largest holders were Capital International Investors ($107.2M), Granahan Investment Management, LLC ($74.8M) and William Blair Investment Management, LLC ($59.2M). 5 famous investors held it, including Paul Tudor Jones (0.1% of Tudor Investment Corporation's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Marex UK Holdings Ltd.
- Filed as
- MAREX GROUP PLC (Q1 2025)
- CUSIP
- G5S37H101
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 33 | $96.1M |
| Exits | 18 | $44.8M |
All 13F filers, Q4 2024 → Q1 2025: 5,276,931 shares bought and 4,417,411 shares sold, net +859,520 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 123 holders
| Capital International Investors | 0.02% | Add +16.8% | 3,034,458 | $107.2M |
| Granahan Investment Management, LLC | 3.72% | Reduce -3.4% | 2,117,060 | $74.8M |
| William Blair Investment Management, LLC | 0.17% | Reduce -33.1% | 1,676,359 | $59.2M |
| Jennison Associates LLC | 0.04% | Reduce -24.2% | 1,565,203 | $55.3M |
| Royce & Associates LP | 0.56% | Add +0.4% | 1,455,209 | $51.4M |
| Loomis Sayles & Co. L P | 0.07% | New | 1,454,021 | $51.4M |
| Grandeur Peak Global Advisors, LLC | 5.07% | Add +19.2% | 1,295,176 | $45.7M |
| Morgan Stanley | 0.00% | Reduce -1.0% | 1,001,012 | $35.4M |
| Sparta 24 Ltd. | 33.39% | No change | 974,135 | $34.4M |
| BlackRock, Inc. | 0.00% | Reduce -8.2% | 793,740 | $28.0M |
| Allspring Global Investments Holdings, LLC | 0.04% | Reduce -20.1% | 711,373 | $25.4M |
| Thornburg Investment Management Inc. | 0.34% | New | 687,673 | $24.3M |
| Amundi | 0.01% | Add +7.9% | 646,770 | $24.0M |
| Two Sigma Investments, LP | 0.05% | Add +35.6% | 655,592 | $23.2M |
| Two Sigma Advisers, LP | 0.05% | Add +52.0% | 647,400 | $22.9M |
| Millennium Management | 0.02% | Add +14.2% | 493,961 | $17.4M |
| Bank of America Corp. | 0.00% | Reduce -12.7% | 460,435 | $16.3M |
| Principal Financial Group Inc. | 0.01% | Reduce -6.1% | 453,979 | $16.0M |
| Arrowstreet Capital, Limited Partnership | 0.01% | Reduce -36.5% | 451,618 | $16.0M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -17.7% | 400,169 | $14.1M |
| JPMorgan Chase & Co. | 0.00% | Add +32.4% | 376,773 | $13.3M |
| Marshall Wace, LLP | 0.02% | Reduce -29.6% | 344,096 | $12.2M |
| Lord, Abbett & Co. LLC | 0.04% | Add +90.8% | 322,665 | $11.4M |
| Russell Investments Group, Ltd. | 0.01% | Add +14.7% | 306,631 | $10.8M |
| Healthcare of Ontario Pension Plan Trust Fund | 0.02% | Reduce -25.0% | 300,000 | $10.6M |
| Wellington Management Group LLP | 0.00% | Add +116.8% | 263,101 | $9.3M |
| Voloridge Investment Management, LLC | 0.03% | Add +9.1% | 242,424 | $8.6M |
| Renaissance Group LLC | 0.37% | Add +187.2% | 239,504 | $8.5M |
| Tudor Investment Corporation | 0.07% | Add +246.5% | 229,375 | $8.1M |
| Qube Research & Technologies Ltd | 0.01% | Add +220.4% | 214,236 | $7.6M |
| Cubist Systematic Strategies, LLC | 0.09% | Add +83.5% | 192,783 | $6.8M |
| BNP Paribas Financial Markets | 0.01% | Add +22.6% | 188,702 | $6.7M |
| Adage Capital Partners Gp, L.L.C. | 0.01% | Reduce -59.2% | 183,709 | $6.5M |
| Renaissance Technologies | 0.01% | Add +34.2% | 177,625 | $6.3M |
| Seven Grand Managers, LLC | 1.44% | Add +40.0% | 175,000 | $6.2M |
| Portolan Capital Management, LLC | 0.47% | Reduce -22.1% | 174,196 | $6.2M |
| Citadel Advisors | 0.01% | Reduce -45.1% | 171,029 | $6.0M |
| State of Wisconsin Investment Board | 0.01% | Add +2.1% | 147,858 | $5.2M |
| Moody National Bank Trust Division | 0.54% | Add +8.9% | 145,718 | $5.1M |
| Nuveen, LLC | 0.00% | — | 137,294 | $4.8M |
| State of Tennessee, Department of Treasury | 0.02% | New | 134,786 | $4.8M |
| Moody Aldrich Partners LLC | 0.91% | Reduce -1.5% | 123,298 | $4.4M |
| Fortress Investment Group LLC | 0.67% | New | 106,272 | $3.8M |
| Legal & General Group Plc | 0.00% | Add +4.6% | 101,383 | $3.6M |
| Trexquant Investment LP | 0.04% | Add +980.3% | 95,021 | $3.4M |
| Engle Capital Management, L.P. | 1.32% | New | 90,140 | $3.2M |
| Calamos Advisors LLC | 0.02% | Add +10.6% | 84,536 | $3.0M |
| Cantor Fitzgerald, L. P. | 0.10% | No change | 75,652 | $2.7M |
| Geode Capital Management, LLC | 0.00% | Reduce -6.4% | 63,591 | $2.2M |
| Envestnet Asset Management Inc. | 0.00% | Add +75.5% | 58,953 | $2.1M |
| PDT Partners, LLC | 0.14% | Add +98.2% | 56,996 | $2.0M |
| Quantbot Technologies LP | 0.06% | Add +37.7% | 54,398 | $1.9M |
| State of New Jersey Common Pension Fund D | 0.01% | New | 51,878 | $1.8M |
| Norges Bank | 0.00% | No change | 50,000 | $1.8M |
| UBS Group AG | 0.00% | Add +2.6% | 48,799 | $1.7M |
| Kodai Capital Management LP | 0.07% | Add +44.6% | 46,501 | $1.6M |
| Point72 Asset Management | 0.00% | Add +213.7% | 45,800 | $1.6M |
| Price Capital Management, Inc. | 3.79% | New | 42,590 | $1.5M |
| Sei Investments Co. | 0.00% | Reduce -21.9% | 37,015 | $1.3M |
| Susquehanna International Group, LLP | 0.00% | Add +191.3% | 34,642 | $1.2M |
| HRT Financial LP | 0.01% | Add +11.7% | 29,791 | $1.1M |
| Jane Street Group, LLC | 0.00% | New | 29,460 | $1.0M |
| Engineers Gate Manager LP | 0.02% | Reduce -54.4% | 28,687 | $1.0M |
| Ghisallo Capital Management LLC | 0.08% | No change | 25,000 | $883K |
| Raymond James Financial Inc. | 0.00% | New | 23,071 | $815K |
| Harbour Capital Advisors, LLC | 0.19% | Add +8.1% | 20,800 | $771K |
| Occudo Quantitative Strategies LP | 0.10% | Reduce -41.0% | 20,764 | $716K |
| Wells Fargo & Company | 0.00% | Reduce -2.7% | 19,261 | $680K |
| Barclays PLC | 0.00% | New | 19,107 | $675K |
| Glenmede Trust Co. NA | 0.00% | Reduce -0.5% | 15,365 | $543K |
| Franklin Resources Inc. | 0.00% | Reduce -13.4% | 15,218 | $538K |
| Mackenzie Financial Corp. | 0.00% | Reduce -13.3% | 15,200 | $537K |
| Corsair Capital Management, L.P. | 0.14% | No change | 14,932 | $527K |
| Entropy Technologies, LP | 0.05% | Add +89.7% | 14,800 | $523K |
| Janney Capital Management LLC | 0.03% | Reduce -8.8% | 14,001 | $495K |
| Bantamac Capital, LLC | 0.21% | New | 12,243 | $432K |
| Y-Intercept (Hong Kong) Ltd | 0.03% | Add +36.7% | 12,138 | $429K |
| MML Investors Services, LLC | 0.00% | New | 11,270 | $398K |
| XTX Topco Ltd | 0.02% | Reduce -69.4% | 9,705 | $343K |
| Keybank National Association | 0.00% | Reduce -19.1% | 9,650 | $341K |
| Verition Fund Management LLC | 0.00% | Reduce -68.0% | 8,740 | $309K |
| WINTON GROUP Ltd | 0.02% | New | 8,656 | $306K |
| Jump Financial, LLC | 0.00% | Reduce -71.6% | 8,300 | $293K |
| Quadrature Capital Ltd | 0.01% | Reduce -43.2% | 8,206 | $290K |
| Clear Harbor Asset Management, LLC | 0.02% | Add +3.2% | 8,049 | $284K |
| LPL Financial LLC | 0.00% | New | 7,954 | $281K |
| Sandia Investment Management LP | 0.78% | Reduce -50.0% | 7,500 | $265K |
| Gsa Capital Partners LLP | 0.02% | Reduce -35.0% | 7,357 | $260K |
| Quantum Portfolio Management LLC | 0.12% | New | 6,807 | $240K |
| Orion Porfolio Solutions, LLC | 0.00% | New | 6,193 | $219K |
| Orion Portfolio Solutions, LLC | 0.00% | New | 6,193 | $219K |
| Napa Wealth Management | 0.12% | New | 6,038 | $213K |
| Squarepoint Ops LLC | 0.00% | Reduce -79.2% | 5,995 | $212K |
| Yorktown Management & Research Co Inc | 0.23% | New | 5,900 | $208K |
| Numerai GP LLC | 0.04% | New | 5,889 | $208K |
| Steward Partners Investment Advisory, LLC | 0.00% | No change | 3,337 | $118K |
| US Bancorp \de | 0.00% | Reduce -2.1% | 2,885 | $102K |
| Gen-Wealth Partners Inc | 0.04% | No change | 2,575 | $91K |
| Citigroup Inc. | 0.00% | Add +17960.0% | 1,806 | $64K |
| Assetmark, Inc. | 0.00% | Reduce -1.6% | 1,452 | $51K |
"% of holder's portfolio" is MRX's weight in each manager's 13F, not the share of Marex UK Holdings Ltd. the manager owns.