HolderBook

AFFILIATED MANAGERS GROUP IN (MGRD)

Institutional ownership reported to the SEC as of Q2 2026, across 26 quarters.

2
Reporting holders
$1.6M
Reported value
100.0%
Held as options
+1
Holder change

Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.

Holders

FilerValueShares Their book Held Change
IMC-Chicago, LLC$1.1Moptions only0.00%newOPTIONS
SIMPLEX TRADING, LLC$473.8Koptions only0.00%2qOPTIONS

Quarter by quarter

Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.

QuarterHoldersValue SharesNewAdded TrimmedOptions
Q2 20262$1.6M0300100.0%
Q1 20261$332.0K0100100.0%
Q3 20252$196.4K12,2093000.0%
Q2 20242$179.1K10,7541010.0%
Q1 20241$191.4K10,8840010.0%
Q4 20232$183.6K11,0291010.0%
Q3 20232$171.8K11,1941000.1%
Q2 20232$300.0K0200100.0%
Q1 20231$1420000100.0%
Q4 20221$1580100100.0%
Q3 20221$268.0K0100100.0%
Q2 20222$34.0K0000100.0%
Q1 20222$84.0K0100100.0%
Q4 20211$328.0K0000100.0%
Q3 20211$2.5M0000100.0%
Q2 20211$2.5M0100100.0%
Q1 20211$536.0K0000100.0%
Q4 20201$1.8M0000100.0%
Q3 20201$88.0K0000100.0%
Q2 20201$432.0K0000100.0%
Q1 20202$389.0K0000100.0%
Q4 20192$719.0K0000100.0%
Q3 20192$1.4M0100100.0%
Q2 20192$930.0K0000100.0%
Q1 20192$7.4M0200100.0%
Q4 20181$4.6M0000100.0%