AFFILIATED MANAGERS GROUP (AMG) Institutional Ownership Changes & 13F Activity

AFFILIATED MANAGERS GROUP (AMG). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings. This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Ariel Appreciation Fund, Renaissance Technologies LLC, Sequoia Financial Advisors, Longleaf Partners, and Dodge & Cox Stock Fund.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2019Longleaf PartnersSell-147,8111,691,805$181,209
Q1 2019Arbiter Partners Capital ManagementSell-31,5852,000$214
Q1 2019Ariel Appreciation FundBuy2,389405,414$43,424
Q4 2018Longleaf PartnersBuy664,8101,839,616$179,252
Q4 2018Renaissance Technologies LLCBuy558,800962,300$93,767
Q4 2018Ariel Appreciation FundBuy135,128403,025$39,271
Q4 2018Jensen Investment ManagementBuy2,4006,860$668
Q3 2018Longleaf PartnersBuy1,174,8061,174,806$160,620
Q3 2018Renaissance Technologies LLCBuy326,531403,500$55,167
Q3 2018Ariel Appreciation FundBuy267,897267,897$36,627
Q3 2018Jensen Investment ManagementBuy1,1304,460$610
Q3 2018Torray FundBuy374,810$658
Q2 2018Torray FundSell-5974,773$710
Q2 2018Jensen Investment ManagementBuy5403,330$495
Q1 2018Jensen Investment ManagementBuy9702,790$529
Q1 2018Torray FundBuy2585,370$1,018
Q4 2017Jensen Investment ManagementBuy1,8201,820$374
Q4 2017Torray FundBuy9825,112$1,049
Q3 2017Torray FundBuy324,130$784
Q2 2017Renaissance Technologies LLCSell-73176,969$12,766
Q2 2017Torray FundSell-1454,098$680
Q1 2017Torray FundSell-4,2124,243$696
Q4 2016Meritage GroupSell-75,04524,955$3,626
Q4 2016Arbiter Partners Capital ManagementBuy33,58533,585$4,880
Q4 2016Torray FundBuy7,0708,455$1,229
Q3 2016Meritage GroupBuy100,000100,000$14,470
Q3 2016Renaissance Technologies LLCBuy20,30077,700$11,243
Q4 2015Renaissance Technologies LLCSell-156,80057,400$9,170
Q3 2015Renaissance Technologies LLCBuy176,200214,200$36,626
Q2 2015Renaissance Technologies LLCSell-132,90038,000$8,307

Frequently asked questions about AMG activity

  • Which institutional owners are buying AMG?

    Institutional owners buying AMG include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in AMG activity?

    "Buy" means an investor increased their reported position in AMG compared to the prior reporting period. This reflects growing exposure to AFFILIATED MANAGERS GROUP (AMG) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in AMG increasing?

    Institutional interest in AMG can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.

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