Comparable stake leader
FMR LLC
SEC ownership of Marex Group Ltd
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001997464.
Disclosed value leader
FMR LLC
Comparable rows
2/50
Latest evidence
12 Oct 2026
- Public ticker
- MRX on Nasdaq
- Parsed ownership sources
-
13F, 13D/G, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
FMR LLC
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
2 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
FMR LLC
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
12 Oct 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001997464
- Issuer location
- Hamilton
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Marex Group Ltd (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
FMR LLC
Disclosed value leader
FMR LLC
Comparable rows
2/50
Latest evidence
12 Oct 2026
13F
13D/G
3/4/5
Lead comparable stake: 7.5%
48 rows are not safely comparable across share classes.
13D/G row: FMR LLC
Showing 1-8 of 50 holder rows.
Quick read
FMR LLC leads the comparable SEC ownership view at 7.5%.
2 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens FMR LLC's linked filing trail.
Comparable ownership
Top 2
FMR LLC
7.5%
PRICE T ROWE ASSOCIATES INC /MD/
6.8%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| FMR LLC |
13F
13D/G
Company
|
7.5%
Reported 13D/G
· 30 Jun 2026
|
$327,209,161
5,368,485 shares
|
— | 30 Jun 2026 |
| PRICE T ROWE ASSOCIATES INC /MD/ |
13F
13D/G
Company · T. Rowe Price Associates, Inc.
|
6.8%
Reported 13D/G
· 30 Jun 2026
|
$300,079,000
4,923,341 shares
|
— | 30 Jun 2026 |
| BlackRock, Inc. |
13F
Company
|
—
denominator unverified
|
$280,013,375
4,594,149 shares
|
— | 30 Jun 2026 |
| Capital International Investors |
13F
Company
|
—
denominator unverified
|
$198,962,986
3,264,364 shares
|
— | 30 Jun 2026 |
| Ian T. Lowitt |
3/4/5
Chief Executive Officer, Director
|
—
denominator unverified
|
$172,822,018
2,835,472 shares
|
-$4,708,201 | 07 Sep 2026 |
| ALLIANCEBERNSTEIN L.P. |
13F
Company
|
—
denominator unverified
|
$115,927,437
2,600,436 shares
|
— | 30 Jun 2026 |
| Simon van den Born |
3/4/5
President
|
—
denominator unverified
|
$105,683,333
1,455,076 shares
|
-$3,435,481 | 12 Oct 2026 |
| WASATCH ADVISORS LP |
13F
Company
|
—
denominator unverified
|
$102,582,568
1,683,061 shares
|
— | 30 Jun 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$17,181,833.
Buys
$0
Insiders: 0
Sells
$17,181,833
Insiders: 5
Net
-$17,181,833
Shares: -282,149
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 282,149
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 84,243 | $0 | $5,841,931 | -$5,841,931 |
| 3-6 | 0 | 125,857 | $0 | $7,838,629 | -$7,838,629 |
| 6-9 | 0 | 72,049 | $0 | $3,501,273 | -$3,501,273 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-12 of 12 reporting-owner rows connected to Marex Group Ltd. Open a relationship link for the CIK-to-CIK filing trail.
Rows
12
Largest Forms 3/4/5 holder
Ian T. Lowitt
Net 12M change
-$17.18M
Full value: -$17,181,833 · USD · 12-month changeLatest report
12 Oct 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Ian T. Lowitt | Chief Executive Officer, Director | $172,822,018 | -$4,708,201 | -2.7% | Mixed | 07 Sep 2026 |
| Simon van den Born | President | $105,683,333 | -$3,435,481 | -3.1% | Filing P/S | 12 Oct 2026 |
| Paolo Tonucci | Chief Strategist and CEO, Capital Markets | $91,008,763 | -$7,299,538 | -7.4% | Filing P/S | 12 Oct 2026 |
| Nilesh Jethwa | CEO, Marex Solutions | $17,245,802 | Mixed | 07 Sep 2026 | ||
| Thomas Texier | Group Head of Clearing | $11,174,740 | -$1,476,068 | -12% | Filing P/S | 01 Jun 2026 |
| Rob Irvin | Chief Financial Officer, Director | $2,231,120 | -$262,545 | -11% | Filing P/S | 14 Aug 2026 |
| Robert Mark Pickering | Director | $1,416,128 | Mixed | 09 Jun 2026 | ||
| Konstantin Graf von Schweinitz | Director | $1,166,435 | Mixed | 09 Jun 2026 | ||
| John W. Pietrowicz | Director | $1,059,711 | Mixed | 09 Jun 2026 | ||
| Linda K. Myers | Director | $1,034,880 | Mixed | 09 Jun 2026 | ||
| Sarah Ing | Director | $509,549 | Mixed | 09 Jun 2026 | ||
| Georges Assi | Director | $92,280 | Mixed | 09 Jun 2026 |
Recent insider transactions for Marex Group Ltd
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Simon van den Born | MRX | Ordinary Shares | Sale | -1.04% | -$1,100,183 | $72.04 | -15,272 | 1,455,076 | 12 Oct 2026 | Direct |
| Paolo Tonucci | MRX | Ordinary Shares | Sale | -1.31% | -$1,200,412 | $72.03 | -16,666 | 1,252,905 | 12 Oct 2026 | Direct |
| Paolo Tonucci | MRX | Ordinary Shares | Sale | -1.3% | -$1,181,167 | $70.87 | -16,666 | 1,269,571 | 14 Sep 2026 | Direct |
| Simon van den Born | MRX | Ordinary Shares | Sale | -1.03% | -$1,082,277 | $70.87 | -15,271 | 1,470,348 | 14 Sep 2026 | Direct |
| Paolo Tonucci | MRX | Ordinary Shares | Tax liability | -1.4% | -18,293 | 1,286,237 | 07 Sep 2026 | Direct | ||
| Simon van den Born | MRX | Ordinary Shares | Tax liability | -0.88% | -13,215 | 1,485,619 | 07 Sep 2026 | Direct | ||
| Nilesh Jethwa | MRX | Ordinary Shares | Tax liability | -10% | -31,567 | 282,950 | 07 Sep 2026 | Direct | ||
| Ian T. Lowitt | MRX | Ordinary Shares | Tax liability | -1.27% | -36,587 | 2,835,472 | 07 Sep 2026 | Direct | ||
| Nilesh Jethwa | MRX | Ordinary Shares | Award | 27.2% | 67,163 | 314,517 | 19 Aug 2026 | Direct | ||
| Paolo Tonucci | MRX | Ordinary Shares | Award | 3.08% | 38,921 | 1,304,530 | 19 Aug 2026 | Direct | ||
| Simon van den Born | MRX | Ordinary Shares | Award | 2.29% | 33,582 | 1,498,834 | 19 Aug 2026 | Direct | ||
| Ian T. Lowitt | MRX | Ordinary Shares | Award | 2.79% | 77,843 | 2,872,059 | 19 Aug 2026 | Direct | ||
| Rob Irvin | MRX | Ordinary Shares | Sale | -10.6% | -$262,545 | $70.96 | -3,700 | 31,046 | 14 Aug 2026 | Direct |
| Paolo Tonucci | MRX | Ordinary Shares | Sale | -1.3% | -$1,015,347 | $60.92 | -16,668 | 1,265,609 | 10 Aug 2026 | Direct |
| Paolo Tonucci | MRX | Ordinary Shares | Sale | -1.28% | -$1,073,578 | $64.42 | -16,666 | 1,282,277 | 13 Jul 2026 | Direct |
| Ian T. Lowitt | MRX | Ordinary Shares | Sale | -1.31% | -$2,391,703 | $64.39 | -37,142 | 2,794,216 | 13 Jul 2026 | Direct |
| Paolo Tonucci | MRX | Ordinary Shares | Sale | -1.27% | -$1,040,849 | $62.45 | -16,666 | 1,298,943 | 15 Jun 2026 | Direct |
| Ian T. Lowitt | MRX | Ordinary Shares | Sale | -1.29% | -$2,316,498 | $62.37 | -37,143 | 2,831,358 | 12 Jun 2026 | Direct |
| Georges Assi | MRX | Ordinary Shares | Award | 2,070 | 2,070 | 09 Jun 2026 | Direct | |||
| Konstantin Graf von Schweinitz | MRX | Ordinary Shares | Award | 8.59% | 2,070 | 26,165 | 09 Jun 2026 | Direct | ||
| Sarah Ing | MRX | Ordinary Shares | Award | 23.5% | 2,070 | 10,895 | 09 Jun 2026 | Direct | ||
| John W. Pietrowicz | MRX | Ordinary Shares | Award | 9.54% | 2,070 | 23,771 | 09 Jun 2026 | Direct | ||
| Linda K. Myers | MRX | Ordinary Shares | Award | 9.79% | 2,070 | 23,214 | 09 Jun 2026 | Direct | ||
| Robert Mark Pickering | MRX | Ordinary Shares | Award | 6.97% | 2,070 | 31,766 | 09 Jun 2026 | Direct | ||
| Thomas Texier | MRX | Ordinary Shares | Sale | -0.75% | -$83,865 | $53.35 | -1,572 | 207,019 | 01 Jun 2026 | Direct |
| Linda K. Myers | MRX | Ordinary Shares | Tax liability | -5.01% | -1,115 | 21,144 | 01 Jun 2026 | Direct | ||
| John W. Pietrowicz | MRX | Ordinary Shares | Tax liability | -2.51% | -558 | 21,701 | 01 Jun 2026 | Direct | ||
| Sarah Ing | MRX | Ordinary Shares | Tax liability | -12.9% | -1,310 | 8,825 | 01 Jun 2026 | Direct | ||
| Ian T. Lowitt | MRX | Ordinary Shares | Tax liability | -1.36% | -39,478 | 2,868,501 | 22 May 2026 | Direct | ||
| Rob Irvin | MRX | Ordinary Shares | Tax liability | -8.81% | -3,358 | 34,746 | 22 May 2026 | Direct | ||
| Thomas Texier | MRX | Ordinary Shares | Tax liability | -8.61% | -19,640 | 208,591 | 22 May 2026 | Direct | ||
| Simon van den Born | MRX | Ordinary Shares | Tax liability | -2.9% | -43,712 | 1,465,252 | 22 May 2026 | Direct | ||
| Nilesh Jethwa | MRX | Ordinary Shares | Tax liability | -13.8% | -39,661 | 247,354 | 22 May 2026 | Direct | ||
| Paolo Tonucci | MRX | Ordinary Shares | Tax liability | -2.31% | -31,080 | 1,315,609 | 22 May 2026 | Direct | ||
| Paolo Tonucci | MRX | Ordinary Shares | Sale | -1.22% | -$932,136 | $55.92 | -16,668 | 1,346,689 | 11 May 2026 | Direct |
| Thomas Texier | MRX | Ordinary Shares | Sale | -5.95% | -$764,487 | $52.99 | -14,427 | 228,231 | 01 May 2026 | Direct |
| Simon van den Born | MRX | Ordinary Shares | Sale | -0.87% | -$675,916 | $50.95 | -13,265 | 1,508,964 | 20 Apr 2026 | Direct |
| Paolo Tonucci | MRX | Ordinary Shares | Sale | -1.21% | -$856,049 | $51.36 | -16,666 | 1,363,357 | 13 Apr 2026 | Direct |
| Simon van den Born | MRX | Ordinary Shares | Sale | -0.86% | -$577,105 | $43.51 | -13,264 | 1,522,229 | 01 Apr 2026 | Direct |
| Thomas Texier | MRX | Ordinary Shares | Sale | -5.61% | -$627,715 | $43.51 | -14,427 | 242,658 | 01 Apr 2026 | Direct |
* marks a reported price that did not pass the local price check.