Marex Group
MRX • NASDAQ
Marex Group is a financial - capital markets company in the financial services sector on NASDAQ, led by Ian Theo Lowitt, with a market cap of $2.9B. As of Q3 2025, 70% of shares are held by 188 institutional investors, with BlackRock, Inc. as the largest holder at 5.1%.
CEOIan Theo Lowitt
Overview
Overview of institutional ownership in MRX as of Q3 2025 with a market cap of $2.5B
All Institutions
- Institutions
- 188
- Value Held
- $1.7B
- Shares Held
- 51.3M
- Avg Position
- $9.2M
- Median Position
- $1.4M
Hedge Funds
- Hedge Funds
- 38
- Value Held
- $312.3M
- Shares Held
- 9.3M
- Avg Position
- $8.2M
- Median Position
- $3.2M
Ownership Breakdown
Based on market cap of $2.5B as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.
Biggest Investors
Institutions with the largest positions in MRX as of Q3 2025
| Institution | Position Value |
|---|---|
 BlackRock, Inc. Institution | $124.9M 0.00% of portfolio |
C Capital International Investors Institution | $117.3M 0.02% of portfolio |
 LOOMIS SAYLES & CO L P Long Only Manager | $60.1M 0.07% of portfolio |
 Grandeur Peak Global Advisors, LLC Long Only Manager | $59.0M 7.91% of portfolio |
 ALLIANCEBERNSTEIN L.P. Long Only Manager | $52.4M 0.02% of portfolio |
 JENNISON ASSOCIATES LLC Long Only Manager | $48.9M 0.03% of portfolio |
R ROYCE & ASSOCIATES LLC Institution | $47.7M 0.48% of portfolio |
A ADAGE CAPITAL PARTNERS GP LLC Institution | $44.8M 0.07% of portfolio |
 Invesco Ltd. ETF Provider | $40.8M 0.01% of portfolio |
 PRICE T ROWE ASSOCIATES INC /MD/ Long Only Manager | $40.7M 0.00% of portfolio |
Net Capital Flow
Institutional buying and selling activity for MRX in Q3 2025
- Traded
- +$18.9M
- Buyers
- 121
- Sellers
- 103
- Total Bought
- +$405.5M
- Total Sold
- −$386.6M
- Avg Position
- $7.3M
Biggest Buyers
| Institution | Net Bought |
|---|---|
PRICE T ROWE ASSOCIATES INC /MD/ Long Only Manager | +$40.2M +1.2M shares |
BlackRock, Inc. Institution | +$39.8M +1.2M shares |
 BALYASNY ASSET MANAGEMENT LLC Hedge Fund•Multi-Strategy | +$22.8M +677.7K shares |
M Man Group plc Institution | +$20.7M +615.4K shares |
 FMR LLC Institution | +$20.2M +602.3K shares |
R ROYCE & ASSOCIATES LLC Institution | +$15.5M +460.0K shares |
P Praetorian PR LLC Hedge Fund•Long/Short | +$13.4M +400.0K shares |
 WELLINGTON MANAGEMENT CO LLP Long Only Manager | +$13.3M +394.3K shares |
Q Qube Research & Technologies Ltd Institution | +$13.0M +387.1K shares |
 STATE STREET CORP Institution | +$12.9M +382.5K shares |
Biggest Sellers
| Institution | Net Sold |
|---|---|
 GRANAHAN INVESTMENT MANAGEMENT INC/MA Long Only Manager | −$34.4M −1.0M shares |
 DRIEHAUS CAPITAL MANAGEMENT LLC Hedge Fund•Event Driven | −$29.7M −753.7K shares |
 VICTORY CAPITAL MANAGEMENT INC Long Only Manager | −$24.4M −617.4K shares |
 MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy | −$23.2M −688.9K shares |
 Marshall Wace LLP Institution | −$20.3M −603.7K shares |
 WCM INVESTMENT MANAGEMENT/CA Long Only Manager | −$17.9M −448.1K shares |
 MORGAN STANLEY RIA/Wealth | −$16.3M −485.1K shares |
 Fortress Investment Group LLC RIA/Wealth | −$15.8M −400.0K shares |
 CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy | −$15.2M −451.5K shares |
 WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Long Only Manager | −$14.9M −442.3K shares |
Entry and Exit Activity
Institutions that initiated new positions or completely exited MRX in Q3 2025
- New Positions
- 40
- New Value
- $39.5M
- Exited Positions
- 48
- Exited Value
- $164.9M
New Positions
| Institution | Position Value |
|---|---|
P Praetorian PR LLC Hedge Fund•Long/Short | $13.4M 400.0K shares |
 GLOBEFLEX CAPITAL L P Long Only Manager | $7.0M 209.7K shares |
 Creative Planning RIA/Wealth | $4.1M 120.7K shares |
 Aquatic Capital Management LLC Hedge Fund•Quant | $3.2M 95.7K shares |
 Main Street Financial Solutions, LLC RIA/Wealth | $1.5M 45.0K shares |
D DARK FOREST CAPITAL MANAGEMENT LP Pension/Endowment | $1.5M 44.9K shares |
$1.3M 39.2K shares | |
C CREDIT AGRICOLE S A Institution | $895.2K 26.6K shares |
P PEAK6 LLC Institution | $886.0K 26.4K shares |
P PICTON MAHONEY ASSET MANAGEMENT Institution | $768.0K 22.8K shares |
Exited Positions
| Institution | Previous Position |
|---|---|
DRIEHAUS CAPITAL MANAGEMENT LLC Hedge Fund•Event Driven | $29.7M 753.7K shares |
VICTORY CAPITAL MANAGEMENT INC Long Only Manager | $24.4M 617.4K shares |
WCM INVESTMENT MANAGEMENT/CA Long Only Manager | $17.9M 448.1K shares |
Fortress Investment Group LLC RIA/Wealth | $15.8M 400.0K shares |
D D. E. Shaw & Co., Inc. Institution | $13.3M 337.2K shares |
Z Zimmer Partners, LP Hedge Fund•Long/Short | $11.8M 300.0K shares |
 Ghisallo Capital Management LLC Hedge Fund•Multi-Strategy | $8.7M 220.6K shares |
S SOROS FUND MANAGEMENT LLC Institution | $4.9M 124.5K shares |
 Monashee Investment Management LLC Hedge Fund•Sector | $3.6M 90.0K shares |
 Portolan Capital Management, LLC Hedge Fund•Long/Short | $3.3M 83.8K shares |
Options Activity
Institutions with the largest Call and Put options positions in MRX as of Q3 2025
- Call Positions
- 5
- Call Value
- $7.1M
- Put Positions
- 4
- Put Value
- $2.9M
Call Positions
| Institution | Position Value |
|---|---|
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy | $2.2M 650.0 contracts |
W WOLVERINE TRADING, LLC Institution | $2.2M 639.0 contracts |
 SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity | $1.7M 517.0 contracts |
 Caption Management, LLC Hedge Fund•Long/Short | $672.4K 200.0 contracts |
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy | $366.5K 109.0 contracts |
Put Positions
| Institution | Position Value |
|---|---|
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity | $1.4M 431.0 contracts |
Caption Management, LLC Hedge Fund•Long/Short | $672.4K 200.0 contracts |
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy | $517.7K 154.0 contracts |
W WOLVERINE TRADING, LLC Institution | $262.5K 77.0 contracts |
Most Committed Institutions
Institutions with MRX as the highest % of their portfolio as of Q3 2025
| Institution | Portfolio Weight |
|---|---|
P Praetorian PR LLC Hedge Fund•Long/Short | 8.15% $13.4M |
Grandeur Peak Global Advisors, LLC Long Only Manager | 7.91% $59.0M |
E Engle Capital Management, L.P. Hedge Fund•Long/Short | 3.91% $11.1M |
GRANAHAN INVESTMENT MANAGEMENT INC/MA Long Only Manager | 1.45% $35.5M |
GLOBEFLEX CAPITAL L P Long Only Manager | 1.09% $7.0M |
 Burkehill Global Management, LP Hedge Fund•Event Driven | 0.97% $16.8M |
 MOODY ALDRICH PARTNERS LLC Long Only Manager | 0.72% $3.8M |
S SEVEN GRAND MANAGERS, LLC Hedge Fund•Multi-Strategy | 0.67% $8.4M |
 Militia Capital Partners, LP Hedge Fund•Long/Short | 0.62% $1.2M |
R ROYCE & ASSOCIATES LLC Institution | 0.48% $47.7M |
Hedge Fund Spotlight
Discover hedge funds investing in MRX
Quantbot Technologies LLC
Hedge Fund • Quant
Portfolio ManagerPaul Edward White
- Portfolio Value
- $3.7B
- Positions
- 1,694
- Last Reported
- Q3 2025
Sector Allocation
Position in Marex Group
- Market Value
- $874.6K
- Shares Held
- 26.0K
- Portfolio Weight
- 0.02%
- Owned Since
- 2024-Q2
| Top Holding | Sector | Market Value | Weight |
|---|---|---|---|
Financial - Credit Services Financial Services | $29.1M | 0.79% | |
Semiconductors Technology | $27.8M | 0.75% | |
Conglomerates Industrials | $27.6M | 0.75% |
