Security key
008252108
AFFILIATED MANAGERS GROUP, INC. - Common Stock (AMG)
CUSIP: 008252108
Q2 2025 13F Holders as of 30 Jun 2025
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 26,821,076
- Total 13F value
- $5,277,536,259
- Share change
- -486,707
- Put/Call ratio
- 34%
- SEC-reported price per share
- $196.77
- Number of holders
- 429
- Value change
- -$84,552,044
- Number of buys
- 189
- Number of sells
- 220
- Shares outstanding
- 26,719,538
Holder snapshot
7 signals
Show 1 more signal
Security identity
1 source field
Report period
Q2 2025
Institutions
429
Top holders
10
AMG full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q3 2025
Previous quarter: Q1 2025
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
VANGUARD GROUP INC
Disclosed value leader
VANGUARD GROUP INC
Comparable rows
15/15
Latest evidence
31 Mar 2025
13F
Lead comparable stake: 11%
Showing 1-6 of 15 holder rows.
Quick read
VANGUARD GROUP INC leads the comparable SEC ownership view at 11%.
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.
Comparable ownership
Top 5
VANGUARD GROUP INC
11%
BlackRock, Inc.
11%
MORGAN STANLEY
8.6%
Clarkston Capital Partners, LLC
5.9%
ARIEL INVESTMENTS, LLC
5.3%
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
|
11%
|
$503,174,069
2,994,549 shares
|
— | 31 Mar 2025 |
| BlackRock, Inc. |
13F
Company
|
11%
|
$493,298,246
2,935,775 shares
|
— | 31 Mar 2025 |
| MORGAN STANLEY |
13F
Company
|
8.6%
|
$385,550,079
2,294,529 shares
|
— | 31 Mar 2025 |
| Clarkston Capital Partners, LLC |
13F
Company
|
5.9%
|
$266,381,992
1,585,324 shares
|
— | 31 Mar 2025 |
| ARIEL INVESTMENTS, LLC |
13F
Company
|
5.3%
|
$236,443,583
1,407,151 shares
|
— | 31 Mar 2025 |
| MILLENNIUM MANAGEMENT LLC |
13F
Company
|
4.7%
|
$212,668,010
1,265,655 shares
|
— | 31 Mar 2025 |
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 Q2 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
429
Shares
26,821,076
Rows available
429
| 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 Q2 2025 vs Q1 2025 Across Filers
Q1 2025 holders
392
Q2 2025 holders
429
Holder diff
37
| Investor | Q1 2025 Shares | Q2 2025 Shares | Share Diff | Share Chg % | Q1 2025 value | Q2 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend