MAREX GROUP PLC (MRX)
Institutional ownership reported to the SEC as of Q2 2026, across 9 quarters.
202
Reporting holders
$3.1B
Reported value
69.5%
Of shares outstanding
0.3%
Held as options
+9
Holder change
Institutions report 50,687,929 shares against 72,937,470 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end. Share count carried from an earlier filing (concept 2025-12-31).
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| FMR LLC | $327.2M | 5,368,485 | 0.01% | 5q | +54.2%+$115.0M |
| BlackRock, Inc. | $280.0M | 4,594,149 | 0.00% | 8q | +4.7%+$12.5M |
| Capital International Investors | $199.0M | 3,264,364 | 0.04% | 9q | -6.4%-$13.6M |
| ALLIANCEBERNSTEIN L.P. | $115.9M | 2,600,436 | 0.04% | 5q | +50.3%+$38.8M |
| WASATCH ADVISORS LP | $102.6M | 1,683,061 | 0.67% | 3q | +883.6%+$92.2M |
| LOOMIS SAYLES & CO L P | $99.1M | 1,626,702 | 0.12% | 6q | -15.2%-$17.8M |
| SAMLYN CAPITAL, LLC | $90.4M | 1,483,250 | 1.47% | 5q | -12.2%-$12.5M |
| Invesco Ltd. | $85.6M | 1,404,552 | 0.01% | 5q | +2.3%+$1.9M |
| Ophir Asset Management Pty Ltd | $84.8M | 1,391,511 | 6.98% | 3q | +11.6%+$8.8M |
| TWO SIGMA INVESTMENTS, LP | $81.4M | 1,335,436 | 0.06% | 9q | -20.6%-$21.1M |
| VICTORY CAPITAL MANAGEMENT INC | $78.7M | 1,291,337 | 0.04% | 3q | -1.8%-$1.4M |
| Granahan Investment Management, LLC | $76.4M | 1,254,283 | 2.72% | 9q | +2.5%+$1.9M |
| MORGAN STANLEY | $71.3M | 1,169,722 | 0.00% | 9q | +145.1%+$42.2M |
| ROYCE & ASSOCIATES LP | $67.7M | 1,111,339 | 0.55% | 9q | -11.3%-$8.6M |
| STATE STREET CORP | $62.6M | 1,026,731 | 0.00% | 5q | +17.5%+$9.3M |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | $61.5M | 1,009,199 | 0.18% | 9q | -35.6%-$33.9M |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | $61.5M | 1,043,286 | 0.09% | 9q | +43.1%+$18.5M |
| AMERIPRISE FINANCIAL INC | $55.1M | 904,162 | 0.01% | 5q | -52.6%-$61.2M |
| GEODE CAPITAL MANAGEMENT, LLC | $52.9M | 897,253 | 0.00% | 9q | +23.5%+$10.1M |
| WELLINGTON MANAGEMENT GROUP LLP | $47.2M | 775,023 | 0.01% | 7q | +18.2%+$7.3M |
| WESTFIELD CAPITAL MANAGEMENT CO LP | $42.0M | 688,665 | 0.14% | new | NEW |
| JENNISON ASSOCIATES LLC | $36.8M | 604,393 | 0.02% | 9q | -62.4%-$61.1M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $34.7M | 569,895 | 0.00% | 2q | +56.9%+$12.6M |
| GOLDMAN SACHS GROUP INC | $33.6M | 551,753 | 0.00% | 8q | +14.4%+$4.2M |
| FRANKLIN RESOURCES INC | $32.8M | 538,128 | 0.01% | 7q | +821.1%+$29.2M |
| Praetorian PR LLC | $30.5M | 500,000 | 9.71% | 4q | HELD |
| NEW YORK STATE COMMON RETIREMENT FUND | $28.6M | 469,510 | 0.04% | 5q | +97.2%+$14.1M |
| FEDERATED HERMES, INC. | $28.3M | 464,935 | 0.04% | 4q | +447.6%+$23.2M |
| Qube Research & Technologies Ltd | $27.4M | 449,433 | 0.03% | 7q | -24.2%-$8.7M |
| NORGES BANK | $26.2M | 429,800 | 0.00% | new | NEW |
| Nuveen, LLC | $25.5M | 419,120 | 0.01% | 6q | +10.1%+$2.3M |
| ALGERT GLOBAL LLC | $25.1M | 411,697 | 0.30% | 5q | -38.3%-$15.6M |
| Walleye Capital LLC | $24.9M | 408,016 | 0.09% | 5q | +155.3%+$15.1M |
| TUDOR INVESTMENT CORP ET AL | $22.7M | 372,910 | 0.03% | new | NEW |
| Bank of New York Mellon Corp | $22.4M | 367,225 | 0.00% | 5q | -24.2%-$7.1M |
| NORTHERN TRUST CORP | $21.6M | 354,764 | 0.00% | 5q | +22.0%+$3.9M |
| Swedbank AB | $21.6M | 354,440 | 0.02% | 3q | HELD |
| Russell Investments Group, Ltd. | $21.2M | 347,067 | 0.02% | 9q | +1.2%+$248.6K |
| GLENMEDE TRUST CO NA | $18.0M | 295,517 | 0.08% | 5q | -2.8%-$521.1K |
| BANK OF AMERICA CORP /DE/ | $17.8M | 291,285 | 0.00% | 9q | -24.3%-$5.7M |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | $17.6M | 289,033 | 0.01% | 5q | -7.0%-$1.3M |
| THORNBURG INVESTMENT MANAGEMENT INC | $16.8M | 275,027 | 0.16% | 6q | -32.7%-$8.2M |
| INTRINSIC EDGE CAPITAL MANAGEMENT LLC | $16.6M | 272,776 | 1.72% | 2q | +241.0%+$11.7M |
| MML INVESTORS SERVICES, LLC | $16.0M | 262,551 | 0.03% | new | NEW |
| Alyeska Investment Group, L.P. | $14.9M | 244,695 | 0.04% | 5q | +1346.8%+$13.9M |
| BNP PARIBAS FINANCIAL MARKETS | $14.7M | 241,071 | 0.01% | 7q | +154.7%+$8.9M |
| JPMORGAN CHASE & CO | $14.3M | 242,209 | 0.00% | 9q | -47.2%-$12.8M |
| Hudson Bay Capital Management LP | $13.9M | 228,742 | 0.04% | 2q | +2.1%+$280.4K |
| Creative Planning | $13.4M | 220,288 | 0.01% | 4q | +5.5%+$705.6K |
| TimesSquare Capital Management, LLC | $12.9M | 211,722 | 0.19% | new | NEW |
| RAYMOND JAMES FINANCIAL INC | $12.8M | 210,293 | 0.00% | 6q | +143.9%+$7.6M |
| RENAISSANCE TECHNOLOGIES LLC | $11.0M | 180,087 | 0.02% | 8q | +123.7%+$6.1M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $10.5M | 171,846 | 0.00% | 5q | +21.7%+$1.9M |
| Sixth Street Partners Management Company, L.P. | $10.5M | 171,846 | 0.00% | new | NEW |
| Marex Group Ltd | $9.9M | 162,617 | 0.04% | 4q | +2.2%+$214.4K |
| Legal & General Group Plc | $9.6M | 158,207 | 0.00% | 7q | +49.8%+$3.2M |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC | $9.5M | 155,555 | 0.18% | 2q | +884.7%+$8.5M |
| PRINCIPAL FINANCIAL GROUP INC | $9.4M | 154,597 | 0.00% | 9q | +11.6%+$980.6K |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | $8.2M | 135,005 | 0.04% | 2q | +40.0%+$2.4M |
| STATE OF WISCONSIN INVESTMENT BOARD | $8.0M | 130,828 | 0.02% | 9q | -9.8%-$866.6K |
| UBS Group AG | $7.8M | 128,477 | 0.00% | 9q | -6.5%-$548.7K |
| Calamos Advisors LLC | $7.6M | 125,108 | 0.03% | 3q | +13.6%+$913.9K |
| Moody Aldrich Partners LLC | $6.7M | 109,733 | 1.20% | 7q | -21.5%-$1.8M |
| MOODY NATIONAL BANK TRUST DIVISION | $5.6M | 91,388 | 0.46% | 8q | +5.5%+$290.0K |
| Uniplan Investment Counsel, Inc. | $5.5M | 90,824 | 0.26% | new | NEW |
| CITIGROUP INC | $5.5M | 90,104 | 0.00% | 9q | +1930.3%+$5.2M |
| Boston Partners | $4.9M | 80,278 | 0.00% | 3q | +23.3%+$924.5K |
| Engle Capital Management, L.P. | $4.8M | 79,037 | 1.32% | 6q | -60.7%-$7.4M |
| RHUMBLINE ADVISERS | $4.8M | 77,995 | 0.00% | 5q | +19.1%+$762.4K |
| WELLS FARGO & COMPANY/MN | $4.7M | 77,128 | 0.00% | 9q | +38.0%+$1.3M |
| RENAISSANCE GROUP LLC | $4.6M | 75,675 | 0.19% | 7q | -60.4%-$7.0M |
| MARSHALL WACE, LLP | $4.6M | 74,677 | 0.00% | 9q | -40.5%-$3.1M |
| Balyasny Asset Management L.P. | $4.2M | 68,815 | 0.01% | 5q | -80.2%-$16.9M |
| EPACRIA CAPITAL PARTNERS, LLC | $4.0M | 65,400 | 3.08% | 3q | HELD |
| DEUTSCHE BANK AG\ | $4.0M | 64,890 | 0.00% | 5q | +35.4%+$1.0M |
| Mariner, LLC | $3.8M | 62,216 | 0.00% | 4q | +6.9%+$244.9K |
| PRUDENTIAL FINANCIAL INC | $3.7M | 61,420 | 0.00% | 2q | +145.5%+$2.2M |
| Squarepoint Ops LLC | $3.5M | 56,688 | 0.00% | 9q | -11.6%-$451.8K |
| Trexquant Investment LP | $3.4M | 55,286 | 0.02% | 4q | +7.6%+$237.2K |
| Quantinno Capital Management LP | $3.3M | 53,603 | 0.00% | 3q | +8.6%+$259.5K |
| CITADEL ADVISORS LLC | $3.2M | options only | 0.00% | 9q | OPTIONS |
| VANGUARD FIDUCIARY TRUST CO | $3.1M | 50,292 | 0.00% | 2q | +27.3%+$657.0K |
| JANE STREET GROUP, LLC | $2.6M | options only | 0.00% | 6q | OPTIONS |
| AQR CAPITAL MANAGEMENT LLC | $2.5M | 40,329 | 0.00% | 4q | +30.7%+$577.7K |
| MetLife Investment Management, LLC | $2.2M | 36,337 | 0.01% | 5q | +19.1%+$355.0K |
| IMC-Chicago, LLC | $2.0M | options only | 0.00% | 2q | OPTIONS |
| Orion Porfolio Solutions, LLC | $1.9M | 31,744 | 0.01% | 6q | +22.3%+$352.5K |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | $1.9M | 30,567 | 0.01% | 7q | -86.4%-$11.8M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $1.7M | 28,673 | 0.00% | 5q | +11.0%+$173.0K |
| Sidoxia Capital Management, LLC | $1.7M | 27,155 | 1.21% | 2q | HELD |
| Y-Intercept (Hong Kong) Ltd | $1.6M | 26,909 | 0.03% | 9q | +352.3%+$1.3M |
| Massar Capital Management, LP | $1.6M | 25,991 | 0.15% | 2q | -64.7%-$2.9M |
| Jain Global LLC | $1.5M | 25,298 | 0.01% | new | NEW |
| ROYAL BANK OF CANADA | $1.3M | 21,303 | 0.00% | 7q | +74.9%+$555.7K |
| Militia Capital Management LLC | $1.2M | 20,000 | 0.04% | 2q | -88.3%-$9.2M |
| Police & Firemen's Retirement System of New Jersey | $1.1M | 18,365 | 0.01% | 5q | +19.6%+$183.2K |
| SIMPLEX TRADING, LLC | $1.1M | 4,989 | 0.00% | 6q | HELD |
| Aquatic Capital Management LLC | $1.1M | 17,662 | 0.04% | 2q | -51.6%-$1.1M |
| Genesee Capital Advisors, LLC | $1.1M | 17,623 | 0.34% | new | NEW |
| TOTH FINANCIAL ADVISORY CORP | $1.0M | 17,000 | 0.10% | new | NEW |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-08-14 | 13G | T. Rowe Price Associates, Inc. | 6.8% |
| 2026-08-10 | 13G/A | MASP Investor Limited Partnershipwith 2 co-filers | 0.0% |
| 2026-08-10 | 13G/A | JRJ Investor 1 LPwith 4 co-filers | 0.0% |
| 2026-08-06 | 13G/A | FMR LLCwith 1 co-filers | 7.5% |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 202 | $3.1B | 50,687,929 | 52 | 79 | 50 | 0.3% |
| Q1 2026 | 193 | $2.2B | 50,884,984 | 34 | 73 | 54 | 0.2% |
| Q4 2025 | 180 | $1.9B | 49,541,051 | 37 | 65 | 60 | 0.1% |
| Q3 2025 | 186 | $1.7B | 51,028,773 | 45 | 73 | 57 | 0.6% |
| Q2 2025 | 184 | $2.0B | 51,186,614 | 82 | 65 | 28 | 0.1% |
| Q1 2025 | 117 | $881.4M | 24,879,919 | 33 | 36 | 34 | 0.1% |
| Q4 2024 | 101 | $822.3M | 26,306,671 | 36 | 41 | 17 | 0.0% |
| Q3 2024 | 69 | $394.8M | 16,647,771 | 23 | 18 | 17 | 0.1% |
| Q2 2024 | 58 | $290.9M | 14,513,608 | 59 | 0 | 0 | 0.2% |