MRXMarex Group plc

$71.90+122% 1Y

Who owns MRX

219 institutions reported holding MRX for 2026Q2, together 79% of the company, more than the 204 a quarter earlier.

219

Institutions reporting a position · as of 2026Q2 · up from 204 the quarter before

Shares held by institutions
56.9M

Shares held by institutions · 79% of the company · long US equity positions only, as reported on Form 13F

Reported value
$3.42B

Reported value · at Jun 30, 2026 prices, not today's

Top 5 holders
29%

Top 5 holders · of the whole company, between five filers

Details›
Reporting quarter2026-06-30
2026Q2
Quarters on record
9
New positions
55
Positions exited
39
Added to
83
Reduced
54
Top 10 holdersof the company
39%
Shares sold shortsettled Sep 15, 2026
2.5M
Short interestof shares outstanding
3.5%
Days to coverat the average daily volume
2.8
Change in the short positionsince the Aug 31, 2026 count
−0.15%
Institutional ownership by quarter, 2024Q2 to 2026Q2
QuarterFilersSharesReported value
2026Q221956.9M$3.42B
2026Q120452.5M$2.33B
2025Q419151.1M$1.96B
2025Q318951.3M$1.72B
2025Q219250.6M$2.00B
2025Q112127.4M$1.19B
2024Q410626.6M$830M
2024Q37016.8M$397M
2024Q25914.7M$295M
Largest reported holders, 2026Q2
HolderShares% of companyValue
FMR LLC5.4M7.5%$327M
PRICE T ROWE ASSOCIATES INC /MD/4.9M6.8%$300M
BlackRock Inc.4.6M6.4%$280M
Capital International Investors3.3M4.5%$199M
ALLIANCEBERNSTEIN L.P.2.6M3.6%$158M
WASATCH ADVISORS LP1.7M2.3%$103M
LOOMIS SAYLES & CO L P1.6M2.3%$99M
SAMLYN CAPITAL, LLC1.5M2.1%$90M
Invesco Ltd.1.4M2.0%$86M
Ophir Asset Management Pty Ltd1.4M1.9%$85M
Short interest by settlement date, Aug 29, 2025 to Sep 15, 2026
SettlementShares shortOf shares outstandingDays to cover
Sep 15, 20262.5M3.5%2.8
Aug 31, 20262.6M3.5%4.8
Aug 14, 20262.9M4.0%4.0
Jul 31, 20263.0M4.1%4.3
Jul 15, 20263.4M4.7%4.2
Jun 30, 20262.6M3.6%2.2
Jun 15, 20263.1M4.2%3.2
May 29, 20263.0M4.2%4.0
May 15, 20262.5M3.5%2.4
Apr 30, 20262.2M3.0%2.2
Apr 15, 20262.9M4.0%1.7
Mar 31, 20262.8M4.0%2.6

SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold. The short position is FINRA's consolidated count for each twice-monthly settlement date, as a share of shares outstanding.

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