Acadian Asset Management Inc. (AAMI)
NYSE: AAMI · Investment Advice · Boston, MA · filing with the SEC since 2019
Who owns Acadian Asset Management Inc.
As filed with the SECHolders of 5% or more
2
Paulson & Co. Inc. holds 16.4% of Common Stock, par value $0.001 per share (the "Common Stock"), as its SCHEDULE 13D/A filed Jun 22, 2026 says.
Directors and officers
7
report now, of 13 people on the record since 2019. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 2 named at left.
Holders of 5% or moreshare of the class, as filed
Paulson & Co. Inc.
SCHEDULE 13D/A · filed Jun 22, 2026 · Common Stock, par value $0.001 per share (the "Common Stock") · 21.6% in Sep 5, 2025
Blackrock, Inc.
SCHEDULE 13G/A · filed Apr 29, 2025 · Common Stock · 14.8% in Feb 5, 2025
Prudential Financial, Inc.
SCHEDULE 13G/A · filed Aug 10, 2026 · Common · reported falling below 5%, from 5.9% in Aug 6, 2025
Jennison Associates LLC
SCHEDULE 13G/A · filed Aug 3, 2026 · Common Stock · reported falling below 5%, from 5.4% in Jan 30, 2026
Empyrean Capital Partners, LP
SCHEDULE 13G/A · filed Nov 14, 2025 · Common stock, par value $0.001 per share · reported falling below 5%
Azora Capital LP
SCHEDULE 13G/A · filed Feb 14, 2025 · Common Stock, par value $0.001 per share ("Common Stock") · reported falling below 5%, from 5.4% in Feb 6, 2025
The Vanguard Group
SCHEDULE 13G/A · filed Mar 26, 2026 · Common Stock · reported falling below 5%
What AAMI reports owning in othersstakes of 5% or more, and other ties
Other ties the annual report names
Acadian Asset Management LLC
An entity · legal entity · owns, named in the 10-K filed Feb 27, 2026
4 subsidiaries in 1 country, from the list filed with the 10-K filed Feb 27, 2026.
Insider tradesForm 4
8sales
0purchases
0sales on a scheduled plan
4people selling
$10.9Msold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Sep 30, 2025 to Sep 30, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Sep 30, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window5 of 14 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Paulson & Co. Inc. | 10% owner | 1 | $147M | 0 | 0 | $0 |
| Hart Richard Jonathan | CLO and CAO | 2 | $6.7M | 0 | 0 | $0 |
| Wiater Christina | PAO | 4 | $2.2M | 0 | 0 | $0 |
| Chersi Robert J | director | 1 | $1.5M | 0 | 0 | $0 |
| Trebbi Barbara | director | 1 | $500,000 | 0 | 0 | $0 |