Security key
008252108
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
- 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
- Number of sells
- 151
- Shares outstanding
- 26,515,982
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q4 2021
Institutions
353
Top holders
10
AMG full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q3 2026
AFFILIATED MANAGERS GROUP, INC. SEC filings
AFFILIATED MANAGERS GROUP, INC. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 008252108
Recent filing periods:
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
0/15
Latest evidence
30 Sep 2021
13F
Highest disclosed value: $1,047,174,000
15 rows are not safely comparable across share classes.
Showing 1-6 of 15 holder rows.
Quick read
EdgePoint Investment Group Inc. has the largest disclosed position value at $1.05B.
0 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.
Disclosed position value
Top 5
EdgePoint Investment Group Inc.
$1.05B
VANGUARD GROUP INC
$547.56M
BlackRock Finance, Inc.
$517.33M
ATLANTA CAPITAL MANAGEMENT CO L L C
$354.11M
Clarkston Capital Partners, LLC
$280.78M
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
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
|
—
denominator unverified
|
$1,047,174,000
6,930,793 shares
|
— | 30 Sep 2021 |
| VANGUARD GROUP INC |
13F
Company
|
—
denominator unverified
|
$547,562,000
3,624,070 shares
|
— | 30 Sep 2021 |
| BlackRock Finance, Inc. |
13F
Company
|
—
denominator unverified
|
$517,333,000
3,424,007 shares
|
— | 30 Sep 2021 |
| ATLANTA CAPITAL MANAGEMENT CO L L C |
13F
Company
|
—
denominator unverified
|
$354,111,000
2,343,710 shares
|
— | 30 Sep 2021 |
| Clarkston Capital Partners, LLC |
13F
Company
|
—
denominator unverified
|
$280,784,000
1,858,388 shares
|
— | 30 Sep 2021 |
| SOUTHEASTERN ASSET MANAGEMENT INC/TN/ |
13F
Company
|
—
denominator unverified
|
$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