What does CUSIP 008252108 represent in this 13F holders report?

CUSIP 008252108 is the security identifier for AMG - AFFILIATED MANAGERS GROUP, INC. - Common Stock used to aggregate holder disclosures.

How many institutions held AMG - AFFILIATED MANAGERS GROUP, INC. - Common Stock in Q1 2023?

381 institutional investors reported AMG - AFFILIATED MANAGERS GROUP, INC. - Common Stock for Q1 2023. Use the holders table for investor-level position and value details.

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

CUSIP: 008252108

Q1 2023 13F Holders as of 31 Mar 2023

Security type / class: Equity / Common Stock
Total 13F shares: 34,481,765
Total 13F value: $4,909,680,816
Share change: -351,415
Put/Call ratio: 77%
SEC-reported price per share: $142.42
Number of holders: 381
Value change: -$59,148,004
Number of buys: 187
Number of sells: 176
Shares outstanding: 26,719,538

Security key

008252108

Report period

Q1 2023

Institutions

381

Top holders

AMG full security history Ownership snapshot Full 13F holder table 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

VANGUARD GROUP INC

Disclosed value leader

VANGUARD GROUP INC

Comparable rows

15/15

Latest evidence

31 Dec 2022

13F Lead comparable stake: 15% Showing 1-6 of 15 holder rows.

Quick read

VANGUARD GROUP INC leads the comparable SEC ownership view at 15%.

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 VANGUARD GROUP INC's linked filing trail.

Comparable ownership Top 5

VANGUARD GROUP INC 15%

BlackRock Finance, Inc. 13%

EdgePoint Investment Group Inc. 12%

MORGAN STANLEY 10%

Clarkston Capital Partners, LLC 8.4%

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
VANGUARD GROUP INC	13F Company 13F	15%	$613,895,496 3,874,869 shares	—	31 Dec 2022
BlackRock Finance, Inc.	13F Company 13F	13%	$555,310,459 3,505,084 shares	—	31 Dec 2022
EdgePoint Investment Group Inc.	13F Company 13F	12%	$489,444,928 3,089,345 shares	—	31 Dec 2022
MORGAN STANLEY	13F Company 13F	10%	$439,317,225 2,772,941 shares	—	31 Dec 2022
Clarkston Capital Partners, LLC	13F Company 13F	8.4%	$354,422,638 2,237,093 shares	—	31 Dec 2022
FMR LLC	13F Company 13F	5.9%	$247,689,353 1,563,399 shares	—	31 Dec 2022

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 Q1 2023

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

Institutions

381

34,481,765

Rows available

381

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 Q1 2023 vs Q1 2023 Across Filers

Q1 2023 holders

381

Q1 2023 holders

381

Holder diff

Investor	Q1 2023 Shares	Q1 2023 Shares	Share Diff	Share Chg %	Q1 2023 value	Q1 2023 value	Value change	Value Chg %