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ARIMX AMG RR SMID VAL-I

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Equity Mutual Fu (fund)

5 managers (5 13F filers) reported a position in ARIMX shares at 2025-03-31, 3,075,450 shares in all. 0 filers opened a position and 0 filers sold out during the quarter.

Managers
5
13F filers
5
New
0
Added
4
Reduced
0
Sold out
0
Shares held by filers
3,075,450

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2025

Filers in the available 13F reports with a share position at 2025-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
Hemenway Trust Co LLC1,866,542$18.1M1.47%+203,27213F-HRTimeline
Broderick Brian C673,406$6.53M1.33%013F-HRTimeline
SOMERVILLE KURT F274,334$2.66M0.46%+67,37113F-HRTimeline
Dempze Nancy E231,177$2.24M1.35%+2,94413F-HRTimeline
Elefante Mark B29,991$291K0.23%+1,40013F-HRTimeline