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Affiliated Managers Group, Inc. (AMG) institutional ownership

Latest close $366.73 Jul 31, 2026
Market cap$5.9B 52-week range SectorFinancial Services
Funds holding · Q1 2026
478
reported AMG position changes
Top owners · Q2 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Activity unavailable N/A
295 buyers · 183 sellers

Affiliated Managers Group, Inc. (AMG) price and institutional activity

Dates

Q1 2026

$0 bought by 295 investors
Invesco Ltd.Jane Street Group, LLC +293 more
$0 sold by 183 investors
Millennium Management LLCClarkston Capital Partners, LLC +181 more
Bought Sold Totals per quarter; hover a bar for the names.

Affiliated Managers Group, Inc. (AMG) institutional activity · 295

Investor Type Est. change Change Δ Own Date
Invesco Ltd. · Added
Change +220K Δ Own +227.2% Date Q1 2026
Invesco Ltd. Added· Q1 2026 +220K +227.2% Q1 2026
Jane Street Group, LLC · Added
Change +212K Date Q1 2026
Jane Street Group, LLC Added· Q1 2026 +212K Q1 2026
Bank of America Corp · Added
Change +176K Date Q1 2026
Bank of America Corp Added· Q1 2026 +176K Q1 2026
Woodline Partners LP · New
Change +146K Date Q1 2026
Woodline Partners LP New· Q1 2026 +146K Q1 2026
Alliancebernstein L.P. · Added
Change +119K Date Q1 2026
Alliancebernstein L.P. Added· Q1 2026 +119K Q1 2026
Qube Research & Technologies Ltd · Added
Change +115K Date Q1 2026
Qube Research & Technologies Ltd Added· Q1 2026 +115K Q1 2026
Caisse de Depot Et Placement du Quebec · Added
Change +115K Date Q1 2026
Caisse de Depot Et Placement du Quebec Added· Q1 2026 +115K Q1 2026
Renaissance Technologies LLC Added· Q1 2026 +91K +474.6% Q1 2026
Geode · Added
Change +85K Date Q1 2026
Geode Added· Q1 2026 +85K Q1 2026
Lord, Abbett & Co. LLC · Added
Change +77K Date Q1 2026
Lord, Abbett & Co. LLC Added· Q1 2026 +77K Q1 2026
Fuller & Thaler Asset Management, Inc. · Added
Change +75K Date Q1 2026
Fuller & Thaler Asset Management, Inc. Added· Q1 2026 +75K Q1 2026
Vanguard · Added
Change +72K Date Q1 2026
Vanguard Added· Q1 2026 +72K Q1 2026
BlackRock · Added
Change +68K Date Q1 2026
BlackRock Added· Q1 2026 +68K Q1 2026
Voloridge Investment Management, LLC · Added
Change +68K Date Q1 2026
Voloridge Investment Management, LLC Added· Q1 2026 +68K Q1 2026
Empowered Funds, LLC · Added
Change +66K Date Q1 2026
Empowered Funds, LLC Added· Q1 2026 +66K Q1 2026
Data through Q1 2026 · filed Jun 3, 2026
15 of 295

Famous investor activity in Affiliated Managers Group, Inc. (AMG)

Affiliated Managers Group, Inc. (AMG) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Palandjian Tracy P. · Director 2 operations 0
Price $82.07 Owned 0 Trade date Jun 12, 2026 Filed date Jun 15, 2026
Palandjian Tracy P. Director 2 operations $82.07 0 0 Jun 12, 2026 Jun 15, 2026
Palandjian Tracy P. · Director Tax withholding or exercise payment (F) -$243K
Price $354.62 Qty -685 Owned 18K Trade date Jun 12, 2026 Filed date Jun 15, 2026
Palandjian Tracy P. Director Tax withholding or exercise payment (F) $354.62 -685 -$243K 18K Jun 12, 2026 Jun 15, 2026
Horgen Jay C. · Director Sell −$5.9M
Price $338.27 Qty −18K Owned 205K Trade date Jun 8, 2026 Filed date Jun 8, 2026
Horgen Jay C. Director Sell $338.27 −18K −$5.9M 205K Jun 8, 2026 Jun 8, 2026
Horgen Jay C. · Director 2 operations 0
Price $74.49 Owned 0 Trade date Jun 8, 2026 Filed date Jun 8, 2026
Horgen Jay C. Director 2 operations $74.49 0 0 Jun 8, 2026 Jun 8, 2026
Horgen Jay C. · Director Tax withholding or exercise payment (F) -$13M
Price $336.62 Qty -40K Owned 222K Trade date Jun 8, 2026 Filed date Jun 8, 2026
Horgen Jay C. Director Tax withholding or exercise payment (F) $336.62 -40K -$13M 222K Jun 8, 2026 Jun 8, 2026
Franqui Annette · Director Buy +$229K
Price $304.88 Qty +750 Owned 2K Trade date Jun 1, 2026 Filed date Jun 3, 2026
Franqui Annette Director Buy $304.88 +750 +$229K 2K Jun 1, 2026 Jun 3, 2026
Matos Rodriguez Felix V · Director Sell −$300K
Price $300.18 Qty −1K Owned 4K Trade date May 8, 2026 Filed date May 8, 2026
Matos Rodriguez Felix V Director Sell $300.18 −1K −$300K 4K May 8, 2026 May 8, 2026
Ryan David Christopher · Director Sell −$1.0M
Price $305.06 Qty −3K Owned 1K Trade date May 6, 2026 Filed date May 8, 2026
Ryan David Christopher Director Sell $305.06 −3K −$1.0M 1K May 6, 2026 May 8, 2026
Cates G. Staley · Director Buy +$459K
Price $305.83 Qty +2K Owned 6K Trade date May 6, 2026 Filed date May 6, 2026
Cates G. Staley Director Buy $305.83 +2K +$459K 6K May 6, 2026 May 6, 2026
Cates G. Staley · Director Grant (A) 172
Owned 172 Trade date May 1, 2026 Filed date May 5, 2026
Cates G. Staley Director Grant (A) 172 172 May 1, 2026 May 5, 2026
Padiyar Kavita · Officer Sell −$612K
Price $278.24 Qty −2K Owned 43K Trade date Mar 9, 2026 Filed date Mar 9, 2026
Padiyar Kavita Officer Sell $278.24 −2K −$612K 43K Mar 9, 2026 Mar 9, 2026
Wojcik Thomas M. · Officer Sell −$2.3M
Price $286.30 Qty −8K Owned 159K Trade date Mar 6, 2026 Filed date Mar 9, 2026
Wojcik Thomas M. Officer Sell $286.30 −8K −$2.3M 159K Mar 6, 2026 Mar 9, 2026
Wojcik Thomas M. · Officer 2 operations 0
Owned 10K Trade date Mar 5, 2026 Filed date Mar 9, 2026
Wojcik Thomas M. Officer 2 operations 0 10K Mar 5, 2026 Mar 9, 2026
Wojcik Thomas M. · Officer Tax withholding or exercise payment (F) -$2.7M
Price $299.18 Qty -9K Owned 167K Trade date Mar 5, 2026 Filed date Mar 9, 2026
Wojcik Thomas M. Officer Tax withholding or exercise payment (F) $299.18 -9K -$2.7M 167K Mar 5, 2026 Mar 9, 2026
Wojcik Thomas M. · Officer Grant (A) 11K
Owned 177K Trade date Mar 5, 2026 Filed date Mar 9, 2026
Wojcik Thomas M. Officer Grant (A) 11K 177K Mar 5, 2026 Mar 9, 2026
15 of 63
15 of 63 Sign in to continue to older insider transactions.

Affiliated Managers Group, Inc. (AMG) activist and large shareholders

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
Vanguard Group Inc 3.7M
% of shares outstanding 10.8% Filing date Feb 13, 2024
Vanguard Group Inc 3.7M 10.8% Feb 13, 2024
BlackRock Inc. 3.2M
% of shares outstanding 10.2% Filing date Jun 7, 2024
BlackRock Inc. 3.2M 10.2% Jun 7, 2024
Morgan Stanley 2.4M
% of shares outstanding 8.0% Filing date Nov 6, 2024
Morgan Stanley 2.4M 8.0% Nov 6, 2024
Clarkston Capital Partners, LLC 2.2M
% of shares outstanding 6.6% Filing date Feb 12, 2024
Clarkston Capital Partners, LLC 2.2M 6.6% Feb 12, 2024
Vanguard Capital Management LLC 1.4M
% of shares outstanding 5.2% Filing date Apr 29, 2026
Vanguard Capital Management LLC 1.4M 5.2% Apr 29, 2026
Vanguard Portfolio Management LLC 1.4M
% of shares outstanding 5.1% Filing date Apr 28, 2026
Vanguard Portfolio Management LLC 1.4M 5.1% Apr 28, 2026
Edgepoint Investment Group Inc.
% of shares outstanding 0.0% Filing date Feb 14, 2024
Edgepoint Investment Group Inc. 0.0% Feb 14, 2024
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Affiliated Managers Group, Inc. (AMG) ownership FAQ

Who owns AMG?

478 reporting institutions disclosed AMG position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.