Marex Group Limited (MRX)
Nasdaq: MRX · Security & Commodity Brokers, Dealers, Exchanges & Services · London · filing with the SEC since 2023
Who owns Marex Group Limited
As filed with the SECHolders of 5% or more
2
Fmr LLC holds 7.5% of COMMON STOCK, as its SCHEDULE 13G/A filed Aug 6, 2026 says.
Directors and officers
12
report now, of 12 people on the record since 2026. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 2 named at left.
Holders of 5% or moreshare of the class, as filed
Fmr LLC
SCHEDULE 13G/A · filed Aug 6, 2026 · COMMON STOCK · 5.1% in May 6, 2026
T. Rowe Price Associates, Inc.
SCHEDULE 13G · filed Aug 14, 2026 · COMMON STOCK
JRJ Investor 1 LP
SCHEDULE 13G/A · filed Aug 10, 2026 · Common Stock, par value $0.001551 per share · reported falling below 5%, from 9.99% in Jul 24, 2025
MASP Investor Limited Partnership
SCHEDULE 13G/A · filed Aug 10, 2026 · Common Stock, par value $0.001551 per share · reported falling below 5%, from 7.01% in Jul 24, 2025
Ocean Ring Jersey Co Limited
SCHEDULE 13G/A · filed Jul 28, 2025 · Ordinary shares, nominal value of $0.001551 per ordinary share · reported falling below 5%
What MRX reports owning in othersstakes of 5% or more, and other ties
Other ties the annual report names
Aarna Capital
A company bought · acquisition · owns, named in the 20-F filed Mar 25, 2026
Agrinvest
A company bought · acquisition · owns, named in the 20-F filed Mar 25, 2026
Agrinvest Commodities
A company bought · acquisition · owns, named in the 20-F filed Mar 25, 2026
Cowen's Prime Services and Outsourced Trading Business
A company bought · acquisition · owns, named in the 20-F filed Mar 25, 2026
Darton Group Limited
A company bought · acquisition · owns, named in the 20-F filed Mar 25, 2026
Eagle Commodities
A company bought · acquisition · owns, named in the 20-F filed Mar 25, 2026
Hamilton Court
A company bought · acquisition · owns, named in the 20-F filed Mar 25, 2026
Volcap Trading Partners Limited
A company bought · acquisition · owns, named in the 20-F filed Mar 25, 2026
1 subsidiary in 1 country, from the list filed with the 20-F filed Mar 25, 2026. Its Form 13F-HR for Jun 30, 2026 lists 1,117 holdings. The record carries no value for them.
Insider tradesForm 4
48sales
0purchases
46sales on a scheduled plan
5people selling
$19.8Msold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Nov 12, 2025 to Nov 12, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Nov 12, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window5 of 12 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Tonucci Paolo | See Remarks | 21 | $8.4M | 21 | 0 | $0 |
| Van Den Born Simon | President | 14 | $4.9M | 14 | 0 | $0 |
| Lowitt Ian T | Chief Executive Officer | 5 | $4.7M | 5 | 0 | $0 |
| Texier Thomas | Group Head of Clearing | 6 | $1.5M | 6 | 0 | $0 |
| Irvin Rob | Chief Financial Officer | 2 | $300,000 | 0 | 0 | $0 |