AFFILIATED MANAGERS GROUP, INC. - Common Stock (AMG)

CUSIP: 008252108

Q4 2021 13F Holders as of 31 Dec 2021

Security type / class
Equity / Common Stock
Total 13F shares
39,151,044
Total 13F value
$6,438,057,146
Holder snapshot 6 visible 7 signals
Share change
-1,012,826
Put/Call ratio
284%
SEC-reported price per share
$164.51
Number of holders
353
Value change
-$164,556,122
Number of buys
150
Open additional details 1 more signal available
Number of sells
151
Security identity Names, identifiers, and filing context for this profile. 1 source field
Shares outstanding
26,719,538

Security key

008252108

Report period

Q4 2021

Institutions

353

Top holders

10

AMG full security history Ownership snapshot Full 13F holder table Newer quarter: Q1 2022 Previous quarter: Q3 2021 AFFILIATED MANAGERS GROUP, INC. SEC filings AFFILIATED MANAGERS GROUP, INC. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Ownership snapshot

Top reported holders of AMG - AFFILIATED MANAGERS GROUP, INC. - Common Stock (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader
EdgePoint Investment Grou...
Disclosed value leader
EdgePoint Investment Grou...
Comparable rows
15/15
Latest evidence
30 Sep 2021
13F Lead comparable stake: 26% Showing 1-6 of 15 holder rows.

Quick read

EdgePoint Investment Group Inc. leads the comparable SEC ownership view at 26%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens EdgePoint Investment Group Inc.'s linked filing trail.
Comparable ownership Top 5
EdgePoint Investment Group Inc. 26%
VANGUARD GROUP INC 14%
BlackRock Finance, Inc. 13%
ATLANTA CAPITAL MANAGEMENT CO L L C 8.8%
Clarkston Capital Partners, LLC 7%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows
Holder Evidence Ownership % Position 12M Net Δ As of
EdgePoint Investment Group Inc.
13F
Company
13F
26%
$1,047,174,000
6,930,793 shares
 — 30 Sep 2021
VANGUARD GROUP INC
13F
Company
13F
14%
$547,562,000
3,624,070 shares
 — 30 Sep 2021
BlackRock Finance, Inc.
13F
Company
13F
13%
$517,333,000
3,424,007 shares
 — 30 Sep 2021
ATLANTA CAPITAL MANAGEMENT CO L L C
13F
Company
13F
8.8%
$354,111,000
2,343,710 shares
 — 30 Sep 2021
Clarkston Capital Partners, LLC
13F
Company
13F
7%
$280,784,000
1,858,388 shares
 — 30 Sep 2021
SOUTHEASTERN ASSET MANAGEMENT INC/TN/
13F
Company
13F
6%
$241,708,000
1,599,761 shares
 — 30 Sep 2021
How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q4 2021

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions
353
Shares
39,151,044
Rows available
353
Investor Option Weight % Change % SEC-reported value * Price Shares Share Change Activity Report Period

* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q4 2021 vs Q3 2021 Across Filers

Q3 2021 holders
324
Q4 2021 holders
353
Holder diff
29
Investor Q3 2021 Shares Q4 2021 Shares Share Diff Share Chg % Q3 2021 value Q4 2021 value Value change Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
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