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Buy Day today: Neutral (51) Mixed market breadth · no major macro event
AAMI

Acadian Asset Management Inc

Financial Services · Asset Management · —

90.70$ +0.2% vs. previous close Closing price · As of: Sep 18, 2026

Ownership

Ownership Structure

Who owns Acadian Asset Management Inc (AAMI)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 83.0% of the shares are freely tradable; institutional investors hold 98.8%.

Institutional ownership ?Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings. 98.8%
Insiders ?Share of the stock held by the executives, founders and major shareholders of the company itself. 0.6%
Float ?Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders. 83.0%
Short % of float ?Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices. 3.6%
Shares Outstanding ?Total number of shares issued. Price times share count gives market cap. 36Mio.

Largest Shareholders

Institutions

Institutions AAMI
Name Stake (%) Shares Change (%) Date
Paulson & Company Inc 16.46 5,843,282 -24.5 06/30/2026
BlackRock Inc 12.89 4,574,232 -1.7 03/31/2026
Jennison Associates LLC 4.30 1,526,570 -24.5 06/30/2026
Empyrean Capital Partners, LP 3.69 1,308,000 +0.0 06/30/2026
State Street Corp 3.41 1,209,440 +0.3 03/31/2026
Vanguard Capital Management, LLC 3.27 1,158,887 +0.0 03/31/2026
Dimensional Fund Advisors, Inc. 2.57 911,667 +0.8 06/30/2026
Vanguard Portfolio Management, LLC 2.49 883,909 +0.0 03/31/2026

Funds

Funds AAMI
Name Stake (%) Shares Change (%) Date
iShares Core S&P Small-Cap ETF 4.52 1,605,651 -0.1 08/31/2026
Vanguard MStar Total Stk Mkt Idx Invest 2.40 851,206 +0.4 07/31/2026

Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.

Insiders

Insider Transactions

Insider Transactions
Date Person Role Type Shares Price Value
Aug 4, 2026 Wiater Christina PAO Sell 244 92.36 22,535
Aug 3, 2026 Wiater Christina PAO Sell 3 88.11 264
Aug 3, 2026 Wiater Christina PAO Sell 17,389 87.49 1,521,402
Aug 3, 2026 Wiater Christina PAO Sell 7,978 86.61 690,960

Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →

Data as of: September 18, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)

Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.

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