Marex UK HoldingsMRX
13F holders, Q2 2026 (June 30)215holders +10
50new positions
39sold out
3famous investors
$60.12avg. 13F price*
At the end of Q2 2026, 215 institutions reported holding Marex UK Holdings Ltd. (MRX) in their 13F filings, up 10 from Q1 2026. 50 opened new positions and 39 sold out. The largest holders were FMR LLC ($327.2M), T. Rowe Price Associates Inc. ($300.1M) and BlackRock, Inc. ($280.0M). 3 famous investors held it, including Paul Tudor Jones (0.1% of Tudor Investment Corporation's portfolio), Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Cliff Asness (0.0% of AQR Capital Management's portfolio).
- Company
- Marex UK Holdings Ltd.
- Filed as
- MAREX GROUP PLC (Q2 2026)
- CUSIP
- G5S37H101
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 50 | $117.6M |
| Exits | 39 | $234.0M |
All 13F filers, Q1 2026 → Q2 2026: 14,497,643 shares bought and 10,701,096 shares sold, net +3,796,547 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 215 holders
| FMR LLC | 0.01% | Add +54.2% | 5,368,485 | $327.2M |
| T. Rowe Price Associates Inc. | 0.03% | Add +158.3% | 4,923,341 | $300.1M |
| BlackRock, Inc. | 0.00% | Add +4.7% | 4,594,149 | $280.0M |
| Capital International Investors | 0.04% | Reduce -6.4% | 3,264,364 | $199.0M |
| Alliancebernstein L.P. | 0.04% | Add +50.3% | 2,600,436 | $115.9M |
| Wasatch Advisors LP | 0.67% | Add +883.6% | 1,683,061 | $102.6M |
| Loomis Sayles & Co. L P | 0.12% | Reduce -15.2% | 1,626,702 | $99.1M |
| Samlyn Capital, LLC | 1.50% | Reduce -12.2% | 1,483,250 | $90.4M |
| Invesco Ltd. | 0.01% | Add +2.3% | 1,404,552 | $85.6M |
| Ophir Asset Management Pty Ltd | 6.98% | Add +11.6% | 1,391,511 | $84.8M |
| Two Sigma Investments, LP | 0.06% | Reduce -20.6% | 1,335,436 | $81.4M |
| Victory Capital Management Inc. | 0.04% | Reduce -1.8% | 1,291,337 | $78.7M |
| Granahan Investment Management, LLC | 2.72% | Add +2.5% | 1,254,283 | $76.4M |
| Morgan Stanley | 0.00% | Add +145.1% | 1,169,722 | $71.3M |
| Royce & Associates LP | 0.55% | Reduce -11.3% | 1,111,339 | $67.7M |
| State Street Corp. | 0.00% | Add +17.6% | 1,026,731 | $62.6M |
| William Blair Investment Management, LLC | 0.18% | Reduce -35.6% | 1,009,199 | $61.5M |
| Healthcare of Ontario Pension Plan Trust Fund | 0.09% | Add +43.1% | 1,043,286 | $61.5M |
| Ameriprise Financial Inc. | 0.01% | Reduce -5.3% | 904,162 | $55.1M |
| Geode Capital Management, LLC | 0.00% | Add +23.5% | 897,253 | $52.9M |
| Wellington Management Group LLP | 0.01% | Add +18.2% | 775,023 | $47.2M |
| Westfield Capital Management Co. LP | 0.14% | New | 688,665 | $42.0M |
| Jennison Associates LLC | 0.02% | Reduce -62.4% | 604,393 | $36.8M |
| Vanguard Portfolio Management LLC | 0.00% | Add +56.9% | 569,895 | $34.7M |
| Goldman Sachs Group Inc. | 0.00% | Add +14.4% | 551,753 | $33.6M |
| Franklin Resources Inc. | 0.01% | Add +821.1% | 538,128 | $32.8M |
| Praetorian PR LLC | 9.71% | No change | 500,000 | $30.5M |
| New York State Common Retirement Fund | 0.04% | Add +97.2% | 469,510 | $28.6M |
| Federated Hermes, Inc. | 0.04% | Add +447.6% | 464,935 | $28.3M |
| Qube Research & Technologies Ltd | 0.03% | Reduce -24.2% | 449,433 | $27.4M |
| Norges Bank | 0.00% | — | 429,800 | $26.2M |
| Nuveen, LLC | 0.01% | Add +10.1% | 419,120 | $25.5M |
| Algert Global LLC | 0.30% | Add +23.4% | 411,697 | $25.1M |
| Walleye Capital LLC | 0.13% | Add +155.3% | 408,016 | $24.9M |
| T. Rowe Price Investment Management, Inc. | 0.02% | Add +16.4% | 385,479 | $23.5M |
| Tudor Investment Corporation | 0.09% | New | 372,910 | $22.7M |
| Bank of New York Mellon Corp | 0.00% | Reduce -24.2% | 367,225 | $22.4M |
| Lord, Abbett & Co. LLC | 0.06% | Add +18.0% | 355,507 | $21.7M |
| Northern Trust Corp. | 0.00% | Add +22.1% | 354,764 | $21.6M |
| Swedbank AB | 0.02% | Add +0.0% | 354,440 | $21.6M |
| Russell Investments Group, Ltd. | 0.02% | Add +1.2% | 347,067 | $21.2M |
| Glenmede Trust Co. NA | 0.08% | Reduce -2.8% | 295,517 | $18.0M |
| Bank of America Corp. | 0.00% | Reduce -24.4% | 291,285 | $17.8M |
| Manufacturers Life Insurance Company, The | 0.01% | Reduce -7.0% | 289,033 | $17.6M |
| Thornburg Investment Management Inc. | 0.16% | Reduce -32.7% | 275,027 | $16.8M |
| Intrinsic Edge Capital Management LLC | 2.05% | Add +241.0% | 272,776 | $16.6M |
| MML Investors Services, LLC | 0.03% | New | 262,551 | $16.0M |
| Alyeska Investment Group, L.P. | 0.04% | Add +1346.8% | 244,695 | $14.9M |
| BNP Paribas Financial Markets | 0.01% | Add +154.7% | 241,071 | $14.7M |
| JPMorgan Chase & Co. | 0.00% | Reduce -47.2% | 242,209 | $14.3M |
| Hudson Bay Capital Management LP | 0.07% | Add +2.0% | 228,742 | $13.9M |
| HRT Financial LP | 0.03% | Add +37.0% | 227,503 | $13.9M |
| Creative Planning | 0.01% | Add +5.5% | 220,288 | $13.4M |
| TimesSquare Capital Management, LLC | 0.19% | New | 211,722 | $12.9M |
| Raymond James Financial Inc. | 0.00% | Add +143.9% | 210,293 | $12.8M |
| Renaissance Technologies | 0.02% | Add +123.7% | 180,087 | $11.0M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +21.7% | 171,846 | $10.5M |
| Marex Group Ltd | 0.07% | Add +2.2% | 162,617 | $9.9M |
| Legal & General Group Plc | 0.00% | Add +49.8% | 158,207 | $9.6M |
| Susquehanna Fundamental Investments, LLC | 0.18% | Add +884.7% | 155,555 | $9.5M |
| Principal Financial Group Inc. | 0.00% | Add +11.6% | 154,597 | $9.4M |
| Commonwealth of Pennsylvania Public School Empls Retrmt SYS | 0.04% | Add +40.0% | 135,005 | $8.2M |
| State of Wisconsin Investment Board | 0.02% | Reduce -9.8% | 130,828 | $8.0M |
| UBS Group AG | 0.00% | Reduce -6.5% | 128,477 | $7.8M |
| Calamos Advisors LLC | 0.04% | Add +13.6% | 125,108 | $7.6M |
| Moody Aldrich Partners LLC | 1.20% | Reduce -21.5% | 109,733 | $6.7M |
| Moody National Bank Trust Division | 0.46% | Add +5.5% | 91,388 | $5.6M |
| Citigroup Inc. | 0.00% | Add +1930.3% | 90,104 | $5.5M |
| Envestnet Asset Management Inc. | 0.00% | Add +14.2% | 87,087 | $5.3M |
| Boston Partners | 0.00% | Add +23.3% | 80,278 | $4.9M |
| Engle Capital Management, L.P. | 1.32% | Reduce -60.7% | 79,037 | $4.8M |
| Rhumbline Advisers | 0.00% | Add +19.1% | 77,995 | $4.8M |
| Wells Fargo & Company | 0.00% | Add +175.9% | 77,128 | $4.7M |
| Renaissance Group LLC | 0.19% | Reduce -60.4% | 75,675 | $4.6M |
| Marshall Wace, LLP | 0.00% | Reduce -40.5% | 74,677 | $4.6M |
| Thrivent Financial for Lutherans | 0.01% | New | 74,611 | $4.5M |
| Balyasny Asset Management L.P. | 0.01% | Reduce -80.2% | 68,815 | $4.2M |
| Epacria Capital Partners, LLC | 3.08% | No change | 65,400 | $4.0M |
| Deutsche Bank AG | 0.00% | Add +35.4% | 64,890 | $4.0M |
| Mariner, LLC | 0.00% | Add +6.9% | 62,216 | $3.8M |
| Prudential Financial Inc. | 0.00% | Add +145.5% | 61,420 | $3.7M |
| Teachers Retirement System of the State of Kentucky | 0.03% | Reduce -5.7% | 60,445 | $3.7M |
| Squarepoint Ops LLC | 0.01% | Reduce -11.6% | 56,688 | $3.5M |
| Trexquant Investment LP | 0.02% | Add +7.6% | 55,286 | $3.4M |
| Quantinno Capital Management LP | 0.00% | Add +8.6% | 53,603 | $3.3M |
| Vanguard Fiduciary Trust Co. | 0.00% | Add +27.3% | 50,292 | $3.1M |
| Uniplan Investment Counsel, Inc. | 0.27% | New | 45,412 | $2.8M |
| AQR Capital Management | 0.00% | Add +30.7% | 40,329 | $2.5M |
| MetLife Investment Management, LLC | 0.01% | Add +19.1% | 36,337 | $2.2M |
| Orion Porfolio Solutions, LLC | 0.01% | Add +22.3% | 31,744 | $1.9M |
| Voloridge Investment Management, LLC | 0.01% | Reduce -86.4% | 30,567 | $1.9M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +11.0% | 28,673 | $1.7M |
| Sidoxia Capital Management, LLC | 1.21% | Add +0.2% | 27,155 | $1.7M |
| Y-Intercept (Hong Kong) Ltd | 0.03% | Add +352.3% | 26,909 | $1.6M |
| Massar Capital Management, LP | 0.54% | Reduce -64.7% | 25,991 | $1.6M |
| Jain Global LLC | 0.02% | New | 25,298 | $1.5M |
| Royal Bank of Canada | 0.00% | Add +74.9% | 21,303 | $1.3M |
| Militia Capital Management LLC | 0.22% | Reduce -76.6% | 20,000 | $1.2M |
| Gsa Capital Partners LLP | 0.07% | Add +220.8% | 19,030 | $1.2M |
| Police & Firemen's Retirement System of New Jersey | 0.01% | Add +19.6% | 18,365 | $1.1M |
"% of holder's portfolio" is MRX's weight in each manager's 13F, not the share of Marex UK Holdings Ltd. the manager owns.