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 2021?

306 institutional investors reported AMG - AFFILIATED MANAGERS GROUP, INC. - Common Stock for Q1 2021. Use the holders table for investor-level position and value details.

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

CUSIP: 008252108

Q1 2021 13F Holders as of 31 Mar 2021

Type / Class: Equity / Common Stock
Shares outstanding: 26,701,627
Total 13F shares: 42,090,229
Share change: -3,102,221
Total reported value: $6,273,698,852
Put/Call ratio: 143%
Price per share: $149.03
Number of holders: 306
Value change: -$440,697,642
Number of buys: 123
Number of sells: 162

Quarterly Holders Quick Answers

What is CUSIP 008252108?
CUSIP 008252108 identifies AMG - AFFILIATED MANAGERS GROUP, INC. - Common Stock in SEC institutional holdings data.

Need full ownership history?
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Related Filing Research

Latest 13F filings for newly reported positions.
Latest Schedule 13D/13G reports for ownership changes outside 13F cadence.
Latest 10-Q/10-K reports for financial context tied to this issuer.
Recent insider transactions for executive and insider activity.
SEC investors directory and top value investors for manager drilldown.
Back to full security ownership history.

Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q2 2021
Previous quarter: Q4 2020

Recent filing periods for CUSIP 008252108:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

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

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
EdgePoint Investment Group Inc.	13F	Company	31%	8,266,028	$840,655,000	—	31 Dec 2020	13F
VANGUARD GROUP INC	13F	Company	14%	3,836,590	$390,182,000	—	31 Dec 2020	13F
BlackRock Finance, Inc.	13F	Company	14%	3,788,524	$385,292,000	—	31 Dec 2020	13F
ATLANTA CAPITAL MANAGEMENT CO L L C	13F	Company	9.7%	2,584,670	$262,861,000	—	31 Dec 2020	13F
Clarkston Capital Partners, LLC	13F	Company	7.5%	1,989,702	$202,353,000	—	31 Dec 2020	13F
Kiltearn Partners LLP	13F	Company	6.4%	1,713,230	$174,235,000	—	31 Dec 2020	13F
SOUTHEASTERN ASSET MANAGEMENT INC/TN/	13F	Company	6.1%	1,617,619	$164,511,000	—	31 Dec 2020	13F
FMR LLC	13F	Company	5.5%	1,460,498	$148,534,000	—	31 Dec 2020	13F
STATE STREET CORP	13F	Company	5.5%	1,456,183	$148,094,000	—	31 Dec 2020	13F
ACR Alpine Capital Research, LLC	13F	Company	5.3%	1,421,797	$144,597,000	—	31 Dec 2020	13F
Spyglass Capital Management LLC	13F	Company	5.1%	1,368,550	$139,182,000	—	31 Dec 2020	13F
LYRICAL ASSET MANAGEMENT LP	13F	Company	3.9%	1,034,404	$105,199,000	—	31 Dec 2020	13F
LGT CAPITAL PARTNERS LTD.	13F	Company	3.8%	1,019,240	$103,657,000	—	31 Dec 2020	13F
ARIEL INVESTMENTS, LLC	13F	Company	3%	791,454	$80,491,000	—	31 Dec 2020	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	2.9%	766,986	$78,001,000	—	31 Dec 2020	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	2.2%	588,127	$59,812,000	—	31 Dec 2020	13F
JUPITER ASSET MANAGEMENT LTD	13F	Company	1.9%	503,351	$51,181,000	—	31 Dec 2020	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	1.8%	482,880	$49,109,000	—	31 Dec 2020	13F
Bank of New York Mellon Corp	13F	Company	1.7%	465,070	$47,297,000	—	31 Dec 2020	13F
NORGES BANK	13F	Company	1.5%	401,084	$40,790,000	—	31 Dec 2020	13F
OPPENHEIMER ASSET MANAGEMENT INC.	13F	Company	1.5%	397,356	$40,411,000	—	31 Dec 2020	13F
NORTHERN TRUST CORP	13F	Company	1.5%	389,885	$39,652,000	—	31 Dec 2020	13F
VICTORY CAPITAL MANAGEMENT INC	13F	Company	1.4%	360,501	$36,663,000	—	31 Dec 2020	13F
PRUDENTIAL FINANCIAL INC	13F	Company	1.3%	356,186	$36,225,000	—	31 Dec 2020	13F
HHLR ADVISORS, LTD.	13F	Company	1.3%	335,073	$34,077,000	—	31 Dec 2020	13F
BRUNI J V & CO /CO	13F	Company	1.2%	321,836	$32,731,000	—	31 Dec 2020	13F
GOLDMAN SACHS GROUP INC	13F	Company	1%	269,551	$27,414,000	—	31 Dec 2020	13F
RAYMOND JAMES & ASSOCIATES	13F	Company	0.89%	237,181	$24,121,000	—	31 Dec 2020	13F
PARAMETRIC PORTFOLIO ASSOCIATES LLC	13F	Company	0.85%	227,956	$23,183,000	—	31 Dec 2020	13F
PRINCIPAL FINANCIAL GROUP INC	13F	Company	0.75%	200,847	$20,426,000	—	31 Dec 2020	13F
SCHRODER INVESTMENT MANAGEMENT GROUP	13F	Company	0.69%	183,653	$18,677,000	—	31 Dec 2020	13F
Polar Capital Holdings Plc	13F	Company	0.66%	175,483	$17,847,000	—	31 Dec 2020	13F
Wallace Capital Management Inc.	13F	Company	0.63%	169,325	$17,220,000	—	31 Dec 2020	13F
BANK OF AMERICA CORP /DE/	13F	Company	0.59%	157,671	$16,035,000	—	31 Dec 2020	13F
JPMORGAN CHASE & CO	13F	Company	0.59%	156,396	$15,905,000	—	31 Dec 2020	13F
Nuveen Asset Management, LLC	13F	Company	0.57%	151,281	$15,386,000	—	31 Dec 2020	13F
Brandywine Global Investment Management, LLC	13F	Company	0.56%	148,232	$15,075,000	—	31 Dec 2020	13F
Gillson Capital LP	13F	Company	0.53%	142,012	$14,443,000	—	31 Dec 2020	13F
RHUMBLINE ADVISERS	13F	Company	0.5%	132,584	$13,484,000	—	31 Dec 2020	13F
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	13F	Company	0.5%	132,303	$13,455,000	—	31 Dec 2020	13F
Invesco Ltd.	13F	Company	0.48%	128,180	$13,036,000	—	31 Dec 2020	13F
Legal & General Group Plc	13F	Company	0.47%	125,449	$12,759,000	—	31 Dec 2020	13F
MACQUARIE GROUP LTD	13F	Company	0.47%	124,363	$12,648,000	—	31 Dec 2020	13F
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM	13F	Company	0.46%	121,596	$12,366,000	—	31 Dec 2020	13F
Foundry Partners, LLC	13F	Company	0.4%	107,645	$10,947,000	—	31 Dec 2020	13F
Swiss National Bank	13F	Company	0.39%	105,300	$10,709,000	—	31 Dec 2020	13F
RIVER GLOBAL INVESTORS LLP	13F	Company	0.37%	98,434	$10,008,000	—	31 Dec 2020	13F
FRED ALGER MANAGEMENT, LLC	13F	Company	0.35%	94,324	$9,593,000	—	31 Dec 2020	13F
NORTH STAR ASSET MANAGEMENT INC	13F	Company	0.35%	92,491	$9,406,000	—	31 Dec 2020	13F
O'SHAUGHNESSY ASSET MANAGEMENT, LLC	13F	Company	0.33%	87,828	$8,931,000	—	31 Dec 2020	13F

Institutional Holders of AFFILIATED MANAGERS GROUP, INC. - Common Stock (AMG) as of Q1 2021

As of 31 Mar 2021, AFFILIATED MANAGERS GROUP, INC. - Common Stock (AMG) was held by 306 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 42,090,229 shares. The largest 10 holders included EdgePoint Investment Group Inc., BlackRock Inc., VANGUARD GROUP INC, ATLANTA CAPITAL MANAGEMENT CO L L C, Clarkston Capital Partners, LLC, Kiltearn Partners LLP, Spyglass Capital Management LLC, FMR LLC, STATE STREET CORP, and SOUTHEASTERN ASSET MANAGEMENT INC/TN/. This page lists 306 institutional shareholders reporting positions in this security for the Q1 2021 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q1 2021 vs Q4 2020 Across Filers

Q4 2020 holders

284

Q1 2021 holders

306

Holder diff

Investor	Q4 2020 Shares	Q1 2021 Shares	Share Diff	Share Chg %	Q4 2020 Value $	Q1 2021 Value $	Value Diff $	Value Chg %

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

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.