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MGRE — Affiliated Managers Group Institutional Holders · Q2 2026

Who owns Affiliated Managers Group (MGRE)? 5 institutions reported holding $5.65M in SEC 13F filings for Q2 2026 (period ended 2026-06-30). Largest holders: Shikiar Asset Management Inc ($1.9M), Iat Reinsurance Co Ltd. ($1.8M), IMC-Chicago, LLC ($1.1M).

RankInstitutionValueSharesChange
1SHIKIAR ASSET MANAGEMENT INC$1.9M81,000Trimmed
2IAT REINSURANCE CO LTD.$1.8M80,000Hold
3IMC-Chicago, LLC$1.1M3,200New
4SIMPLEX TRADING, LLC$473,7601,400Added
5Sterling Capital Management LLC$412,77618,200Hold

Source: SEC Form 13F filings · as of 2026-06-30