Security key
10948W103
Acadian Asset Management Inc. - Common Stock (AAMI)
CUSIP: 10948W103
Q1 2026 13F Holders as of 31 Mar 2026
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 35,950,924
- Total 13F value
- $1,956,675,036
- Share change
- +615,450
- SEC-reported price per share
- $54.42
- Number of holders
- 254
- Value change
- +$39,450,311
- Number of buys
- 121
- Number of sells
- 119
- Shares outstanding
- 35,501,628
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2026
Institutions
254
Top holders
10
AAMI full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q2 2026
Acadian Asset Management Inc. SEC filings
Acadian Asset Management Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 10948W103
Recent filing periods:
Ownership snapshot
Top reported holders of AAMI - Acadian Asset Management 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
BlackRock, Inc.
Disclosed value leader
PAULSON & CO. INC.
Comparable rows
15/15
Latest evidence
31 Dec 2025
13F
13D/G
Lead comparable stake: 11%
13D/G row: BlackRock, Inc.
Showing 1-6 of 15 holder rows.
Quick read
BlackRock, 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.
Open SEC evidence
Opens BlackRock, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock, Inc.
11%
PRUDENTIAL FINANCIAL INC
5.9%
Empyrean Capital Partners, LP
4.3%
Azora Capital LP
4.2%
PAULSON & CO. INC.
22%
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 |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
Company
|
11%
from 13D/G
|
$218,801,606
4,655,353 shares
|
— | 31 Dec 2025 |
| PRUDENTIAL FINANCIAL INC |
13D/G
|
5.9%
|
$80,821,022
2,127,989 shares
|
$0 | 30 Jun 2025 |
| Empyrean Capital Partners, LP |
13D/G
13F
Company
|
4.3%
|
$74,219,761
1,541,108 shares
|
$0 | 30 Sep 2025 |
| Azora Capital LP |
13D/G
|
4.2%
|
$42,168,771
1,565,866 shares
|
-$12,454,910 | 31 Dec 2024 |
| PAULSON & CO. INC. |
13F
Company
|
22%
|
$363,934,254
7,743,282 shares
|
— | 31 Dec 2025 |
| VANGUARD GROUP INC |
13F
Company
|
6.6%
|
$109,762,061
2,335,363 shares
|
— | 31 Dec 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 Q1 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
254
Shares
35,950,924
Rows available
254
| 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 2026 vs Q1 2026 Across Filers
Q1 2026 holders
254
Q1 2026 holders
254
Holder diff
0
| Investor | Q1 2026 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q1 2026 value | Q1 2026 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend