Marex UK HoldingsMRX

13F holders, Q4 2024 (December 31)
106holders +35
40new positions
6sold out
5famous investors
$31.25avg. 13F price*

At the end of Q4 2024, 106 institutions reported holding Marex UK Holdings Ltd. (MRX) in their 13F filings, up 35 from Q3 2024. 40 opened new positions and 6 sold out. The largest holders were Capital International Investors ($81.0M), William Blair Investment Management, LLC ($78.1M) and Granahan Investment Management, LLC ($68.3M). 5 famous investors held it, including Paul Tudor Jones (0.0% of Tudor Investment Corporation's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).

Company
Marex UK Holdings Ltd.
Filed as
MAREX GROUP PLC (Q4 2024)
CUSIP
G5S37H101
Latest filing quarter
Q2 2026

History

Number of 13F holders

050100150200250 Q2 2024: 60Q2 2024Q3 2024: 71Q3 2024Q4 2024: 106Q4 2024Q1 2025: 123Q1 2025Q2 2025: 194Q2 2025Q3 2025: 191Q3 2025Q4 2025: 191Q4 2025Q1 2026: 205Q1 2026Q2 2026: 215Q2 2026

Total Exit/New Position Q3 2024 → Q4 2024

InstitutionsTotal Value
New Positions40$64.5M
Exits6$10.1M

All 13F filers, Q3 2024 → Q4 2024: 10,749,046 shares bought and 986,818 shares sold, net +9,762,228 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.

Ownership 106 holders

Capital International Investors 0.02% Add +73.2% 2,597,449 $81.0M
William Blair Investment Management, LLC 0.19% Add +74.2% 2,504,726 $78.1M
Granahan Investment Management, LLC 2.85% Add +77.7% 2,190,604 $68.3M
Jennison Associates LLC 0.04% Add +85.0% 2,063,763 $64.3M
Royce & Associates LP 0.42% Add +19.1% 1,449,091 $45.2M
Grandeur Peak Global Advisors, LLC 3.00% Add +53.9% 1,086,471 $33.9M
Morgan Stanley 0.00% Add +100.7% 1,010,900 $31.5M
Sparta 24 Ltd. 37.73% Add +20.0% 974,135 $30.4M
Allspring Global Investments Holdings, LLC 0.05% Add +26.7% 890,317 $29.0M
BlackRock, Inc. 0.00% Add +4.8% 865,019 $27.0M
Arrowstreet Capital, Limited Partnership 0.02% Add +6123.2% 710,816 $22.2M
Amundi 0.01% Add +4.0% 599,231 $19.5M
Bank of America Corp. 0.00% Add +254.1% 527,333 $16.4M
Marshall Wace, LLP 0.02% Add +21.6% 488,580 $15.2M
Goldman Sachs Group Inc. 0.00% Add +10.1% 486,316 $15.2M
Principal Financial Group Inc. 0.01% Reduce -7.3% 483,500 $15.1M
Two Sigma Investments, LP 0.04% Add +275.6% 483,495 $15.1M
Adage Capital Partners Gp, L.L.C. 0.02% Reduce -15.6% 450,274 $14.0M
Millennium Management 0.01% Reduce -5.2% 432,418 $13.5M
Two Sigma Advisers, LP 0.03% Add +1324.1% 425,800 $13.3M
Healthcare of Ontario Pension Plan Trust Fund 0.03% Add +60.0% 400,000 $12.5M
Samlyn Capital, LLC 0.16% Reduce -9.8% 324,958 $10.1M
Citadel Advisors 0.01% Reduce -36.8% 311,582 $9.7M
JPMorgan Chase & Co. 0.00% Add +248.0% 284,629 $8.9M
Russell Investments Group, Ltd. 0.01% Add +68.0% 267,240 $8.3M
Walleye Capital LLC 0.08% Add +376.1% 245,710 $7.7M
Portolan Capital Management, LLC 0.47% New 223,614 $7.0M
Voloridge Investment Management, LLC 0.02% New 222,205 $6.9M
Balyasny Asset Management L.P. 0.02% New 204,155 $6.4M
Lord, Abbett & Co. LLC 0.02% Add +3.0% 169,125 $5.3M
Nuveen Asset Management, LLC 0.00% Reduce -10.8% 166,241 $5.2M
BNP Paribas Financial Markets 0.00% New 153,910 $4.8M
Alyeska Investment Group, L.P. 0.02% New 150,000 $4.7M
State of Wisconsin Investment Board 0.01% Add +10.9% 144,754 $4.5M
Horizon Kinetics Asset Management LLC 0.06% New 141,374 $4.4M
Moody National Bank Trust Division 0.44% Add +101.0% 133,846 $4.2M
Renaissance Technologies 0.01% Reduce -6.5% 132,325 $4.1M
Moody Aldrich Partners LLC 0.72% New 125,135 $3.9M
Seven Grand Managers, LLC 1.78% Add +66.7% 125,000 $3.9M
Wellington Management Group LLP 0.00% New 121,378 $3.8M
Cubist Systematic Strategies, LLC 0.05% Add +197.9% 105,044 $3.3M
Legal & General Group Plc 0.00% New 96,887 $3.0M
Renaissance Group LLC 0.11% New 83,392 $2.6M
American Century Companies Inc. 0.00% Add +135.6% 80,886 $2.5M
Boston Partners 0.00% Add +2.3% 78,855 $2.5M
Calamos Advisors LLC 0.02% New 76,435 $2.4M
Cantor Fitzgerald, L. P. 0.09% Reduce -20.9% 75,652 $2.4M
Penserra Capital Management LLC 0.04% New 72,071 $2.2M
Geode Capital Management, LLC 0.00% Add +1.1% 67,908 $2.1M
Qube Research & Technologies Ltd 0.00% New 66,860 $2.1M
Tudor Investment Corporation 0.02% New 66,197 $2.1M
Engineers Gate Manager LP 0.03% Add +533.3% 62,852 $2.0M
Jain Global LLC 0.05% — 50,000 $1.6M
Norges Bank 0.00% No change 50,000 $1.6M
UBS Group AG 0.00% Add +218.4% 47,556 $1.5M
Sei Investments Co. 0.00% Add +73.6% 47,404 $1.5M
Quantbot Technologies LP 0.04% Add +258.2% 39,503 $1.2M
Occudo Quantitative Strategies LP 0.20% Add +88.4% 35,203 $1.1M
Ameriprise Financial Inc. 0.00% Add +72.7% 33,834 $1.1M
Envestnet Asset Management Inc. 0.00% New 33,584 $1.0M
Kodai Capital Management LP 0.04% Reduce -42.0% 32,152 $1.0M
XTX Topco Ltd 0.08% Add +2.7% 31,676 $987K
Jump Financial, LLC 0.02% Add +38.4% 29,227 $911K
PDT Partners, LLC 0.08% New 28,760 $896K
Squarepoint Ops LLC 0.00% Add +0.9% 28,756 $896K
Verition Fund Management LLC 0.00% Add +72.2% 27,288 $851K
HRT Financial LP 0.00% New 26,663 $831K
Ghisallo Capital Management LLC 0.05% Reduce -75.0% 25,000 $779K
Harbour Capital Advisors, LLC 0.14% New 19,235 $645K
Wells Fargo & Company 0.00% Add +1237.8% 19,799 $617K
Freedom Investment Management, Inc. 0.05% New 19,010 $593K
Franklin Resources Inc. 0.00% New 17,578 $548K
Mackenzie Financial Corp. 0.00% New 17,540 $547K
Glenmede Trust Co. NA 0.00% New 15,435 $481K
Janney Capital Management LLC 0.03% Add +0.2% 15,359 $479K
Sandia Investment Management LP 0.89% Add +50.0% 15,000 $468K
Corsair Capital Management, L.P. 0.10% No change 14,932 $465K
Point72 Asset Management 0.00% Reduce -17.1% 14,600 $455K
Quadrature Capital Ltd 0.01% Reduce -67.3% 14,449 $450K
HighTower Advisors, LLC 0.00% New 14,269 $445K
Keybank National Association 0.00% New 11,930 $372K
Susquehanna International Group, LLP 0.00% Reduce -13.9% 11,891 $371K
Gsa Capital Partners LLP 0.03% New 11,319 $353K
Y-Intercept (Hong Kong) Ltd 0.02% Reduce -59.3% 8,881 $277K
Trexquant Investment LP 0.00% New 8,796 $274K
Entropy Technologies, LP 0.03% New 7,800 $243K
Clear Harbor Asset Management, LLC 0.02% New 7,799 $243K
Wolverine Trading, LLC 0.01% New 7,010 $222K
Magnetar Financial LLC 0.01% New 7,048 $220K
Federated Hermes, Inc. 0.00% Reduce -40.0% 6,000 $187K
Steward Partners Investment Advisory, LLC 0.00% New 3,337 $104K
US Bancorp \de 0.00% New 2,947 $92K
Gen-Wealth Partners Inc 0.03% New 2,575 $80K
State of Wyoming 0.01% Reduce -10.6% 1,944 $61K
Assetmark, Inc. 0.00% Reduce -18.4% 1,476 $46K
Simplex Trading, LLC 0.00% New 706 $22K
SBI Securities Co., Ltd. 0.00% — 386 $12K
Osaic Holdings, Inc. 0.00% New 282 $9K
Bell Investment Advisors, Inc 0.00% New 152 $5K
Hexagon Capital Partners LLC 0.00% Add +350.0% 90 $3K
WealthCollab, LLC 0.00% No change 75 $2K
Royal Bank of Canada 0.00% New 56 $2K
CIBC Private Wealth Group LLC 0.00% New 23 $748
Principal Securities, Inc. 0.00% New 16 $499
Tower Research Capital LLC (TRC) 0.00% New 15 $468
Citigroup Inc. 0.00% No change 10 $312

"% of holder's portfolio" is MRX's weight in each manager's 13F, not the share of Marex UK Holdings Ltd. the manager owns.