MAREX GROUP PLC (MRX) Institutional Ownership and Insiders Activity

MAREX GROUP PLC (MRX) is widely held by institutional investors, with 210 firms reporting positions valued at approximately $3.35B based on SEC Form 13F filings for the quarter ended June 30, 2026.

Fmr Llc is the largest disclosed holder, reporting approximately $327.21M in MRX holdings in its latest filing.

Recent insider activity includes 23 tracked Form 4 transactions over the last three months, reflecting ongoing executive and director trading activity.