Acadian Asset Management Inc. - Common Stock, par value $0.001 per share (the "Common Stock") (AAMI)

Q: What does CUSIP 10948W103 represent in this 13F holders report?

CUSIP 10948W103 is the security identifier for AAMI - Acadian Asset Management Inc. - Common Stock, par value $0.001 per share (the "Common Stock") used to aggregate holder disclosures.

Q: How many institutions held AAMI - Acadian Asset Management Inc. - Common Stock, par value $0.001 per share (the "Common Stock") in Q4 2025?

255 institutional investors reported AAMI - Acadian Asset Management Inc. - Common Stock, par value $0.001 per share (the "Common Stock") for Q4 2025. Use the holders table for investor-level position and value details.

CUSIP: 10948W103

Q4 2025 13F Holders as of 31 Dec 2025

Security type / class: Equity / Common Stock, par value $0.001 per share (the "Common Stock")
Total 13F shares: 35,446,399
Total 13F value: $1,666,254,479
Share change: +486,871
SEC-reported price per share: $47.00
Number of holders: 255
Value change: +$22,805,652
Number of buys: 117
Number of sells: 124
Shares outstanding: 35,629,768

Security key

10948W103

Report period

Q4 2025

Institutions

255

Top holders

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

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 10948W103

Newer quarter: Q2 2026

Recent filing periods:

Q2 2026

Ownership snapshot

Top reported holders of AAMI - Acadian Asset Management Inc. - Common Stock, par value $0.001 per share (the "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%

JENNISON ASSOCIATES LLC 5.4%

Empyrean Capital Partners, LP 4.3%

Azora Capital LP 4.2%

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 13F 13D/G	11% from 13D/G	$229,372,446 4,762,717 shares	—	30 Sep 2025
PRUDENTIAL FINANCIAL INC	13D/G 13F Company 13D/G 13F	5.9%	$80,821,022 2,127,989 shares	$0	30 Jun 2025
JENNISON ASSOCIATES LLC	13D/G 13F Company 13D/G 13F	5.4%	$89,733,434 1,909,222 shares	+$8,430,860	31 Dec 2025
Empyrean Capital Partners, LP	13D/G 13F Company 13D/G 13F	4.3%	$74,219,761 1,541,108 shares	$0	30 Sep 2025
Azora Capital LP	13D/G 13D/G	4.2%	$42,168,771 1,565,866 shares	-$12,454,910	31 Dec 2024
PAULSON & CO. INC.	13F Company 13F	22%	$372,916,461 7,743,282 shares	—	30 Sep 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 Q4 2025

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

255

35,446,399

Rows available

255

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 2025 vs Q3 2025 Across Filers

Q3 2025 holders

247

Q4 2025 holders

255

Holder diff

Investor	Q3 2025 Shares	Q4 2025 Shares	Share Diff	Share Chg %	Q3 2025 value	Q4 2025 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend