United States Investment Banking & Investment Services

Acadian Asset Management Inc. (AAMI)

Acadian Asset Management Inc. experienced multiple divestments throughout 2026. The most recent insider trading activity occurred on August 4, 2026, involving sales by Christina Wiater. Previous months also saw significant disposals from various officers and major shareholders, including Paulson & Co. Inc. and Richard J. Hart, reflecting a consistent pattern of equity liquidation by key stakeholders.
Ticker: AAMI Exchange: NYS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Top insiders
Trades
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
2.5
Wiater Christina PAO Officer
Transaction date
Sale
Price
393.33
Quantity 85,863 +21.7%
Value US$4,050,543
2.5
CHRISTINA WIATER Officer Officer
Transaction date
Proposed sale
Price
73.03
Quantity 60,282
Value US$3,886,197
2.5
Wiater Christina PAO Officer
Transaction date
Sale
Price
399.08
Quantity 14,270 +9.6%
Value US$1,974,234
2.5
Wiater Christina PAO Officer
Transaction date
Sale
Price
87.49
Quantity 17,389 -98.6%
Value US$1,521,402
2.5
Wiater Christina PAO Officer
Transaction date
Sale
Price
86.61
Quantity 7,978 -31.1%
Value US$690,960
2.5
Wiater Christina PFO/PAO
Transaction date
Proposed sale
Price
87.21
Quantity 25,370
Value US$2,212,626
3.7
PAULSON & CO. INC. Large shareholder
Transaction date
Sale
Price
77.25
Quantity 1,900,000 -24.5%
Value US$146,775,000
3.7
PAULSON & CO. INC. 10% Stockholder; Director Non-Executive Director Large shareholder
Transaction date
Proposed sale
Price
82.72
Quantity 1,900,000
Value US$157,168,000
2.1
Hart Richard Jonathan CLO and CAO Officer
Transaction date
Sale
Price
67.73
Quantity 11,208 -13.2%
Value US$759,083
2.1
Hart Richard Jonathan CLO and CAO Officer
Transaction date
Sale
Price
66.87
Quantity 88,792 -51.1%
Value US$5,937,938
2.1
RICHARD J HART Officer Officer
Transaction date
Proposed sale
Price
66.97
Quantity 100,000
Value US$6,697,020
1.2
Chersi Robert J Non-Executive Director
Transaction date
Sale
Price
51.30
Quantity 28,753 -43.5%
Value US$1,475,029
1.2
Chersi Robert J Spouse
Transaction date
Proposed sale
Price
51.29
Quantity 28,753
Value US$1,474,741
1.2
Trebbi Barbara Non-Executive Director
Transaction date
Sale
Price
51.22
Quantity 9,691 -21.3%
Value US$496,329
1.2
Trebbi Barbara Director Non-Executive Director
Transaction date
Proposed sale
Price
51.22
Quantity 9,691
Value US$496,329
3.7
PAULSON & CO. INC. Large shareholder
Transaction date
Sale
Price
47.69
Quantity 1,206,839 -13.5%
Value US$57,554,152
3.7
PAULSON & CO. INC. 10% Stockholder; Director Non-Executive Director Large shareholder
Transaction date
Proposed sale
Price
50.48
Quantity 1,206,839
Value US$60,921,232
3.1
Rana Suren Officer; Former President, CEO & Director Executive Director
Transaction date
Proposed sale
Price
30.38
Quantity 371,726
Value US$11,293,035
2.1
Hart Richard Jonathan Officer; Chief Legal Officer Officer
Transaction date
Proposed sale
Price
28.52
Quantity 70,000
Value US$1,996,455
2.1
Hart Richard Jonathan Chief Legal Officer Officer
Transaction date
Sale
Price
28.52
Quantity 70,000 -31.0%
Value US$1,996,400
3.1
Rana Suren President and CEO Executive Director
Transaction date
Sale
Price
20.74
Quantity 109,960 -45.6%
Value US$2,280,361
3.1
Rana Suren Officer; President, CEO & Director Executive Director
Transaction date
Proposed sale
Price
21.24
Quantity 109,960
Value US$2,336,000
2.1
Hart Richard Jonathan Chief Legal Officer Officer
Transaction date
Sale
Price
24.66
Quantity 300 -0.6%
Value US$7,398
2.1
Hart Richard Jonathan Chief Legal Officer Officer
Transaction date
Sale
Price
24.65
Quantity 598 -1.1%
Value US$14,741
2.5
Wiater Christina PFO / PAO Officer
Transaction date
Sale
Price
24.84
Quantity 37 -2.0%
Value US$919
2.5
Wiater Christina PFO / PAO Officer
Transaction date
Sale
Price
24.88
Quantity 200 -9.7%
Value US$4,976
2.1
Hart Richard Jonathan Chief Legal Officer Officer
Transaction date
Sale
Price
24.84
Quantity 1,475 -2.8%
Value US$36,639
3.1
Rana Suren President and CEO Executive Director
Transaction date
Sale
Price
24.05
Quantity 119,963 -47.8%
Value US$2,884,822
3.1
Rana Suren President and CEO Executive Director
Transaction date
Sale
Price
25.81
Quantity 128,176 -32.0%
Value US$3,308,787
3.7
PAULSON & CO. INC. Large shareholder
Transaction date
Sale
Price
25.18
Quantity 100,000 -1.1%
Value US$2,518,000
3.7
PAULSON & CO. INC. Large shareholder
Transaction date
Sale
Price
31.50
Quantity 690,000 -7.1%
Value US$21,735,000
2.5
Wiater Christina PFO / PAO Officer
Transaction date
Sale
Price
24.91
Quantity 38 -2.7%
Value US$947
2.1
Hart Richard Jonathan Chief Legal Officer Officer
Transaction date
Sale
Price
24.91
Quantity 57 -0.1%
Value US$1,420
3.7
PAULSON & CO. INC. Large shareholder
Transaction date
Sale
Price
31.50
Quantity 10,260,431 -51.3%
Value US$323,203,576
2.1
Hart Richard Jonathan Chief Legal Officer Officer
Transaction date
Sale
Price
20.41
Quantity 2,679 -10.7%
Value US$54,678
2.5
Wiater Christina PFO / PAO Officer
Transaction date
Sale
Price
20.28
Quantity 396 -13.0%
Value US$8,031
2.5
Wiater Christina PFO / PAO Officer
Transaction date
Sale
Price
18.68
Quantity 39 -1.6%
Value US$729
2.1
Hart Richard Jonathan Chief Legal Officer Officer
Transaction date
Sale
Price
18.68
Quantity 39 -0.2%
Value US$729
3.0
Paulson John Non-Executive Director Large shareholder
Transaction date
Sale
Price
9.79
Quantity 647,263 -3.1%
Value US$6,336,705
3.7
PAULSON & CO. INC. Large shareholder
Transaction date
Sale
Price
9.79
Quantity 647,263 -3.1%
Value US$6,336,705
3.0
Paulson John Non-Executive Director Large shareholder
Transaction date
Purchase
Price
9.79
Quantity 647,263 +3.2%
Value US$6,336,705
3.7
PAULSON & CO. INC. Large shareholder
Transaction date
Purchase
Price
9.79
Quantity 647,263 +3.2%
Value US$6,336,705
1.6
Mahoney Daniel K. Head of Finance/PAO Officer
Transaction date
Sale
Price
10.57
Quantity 1 -0.0%
Value US$11
1.6
Mahoney Daniel K. Head of Finance/PAO Officer
Transaction date
Sale
Price
10.51
Quantity 936 -8.7%
Value US$9,837
1.6
Mahoney Daniel K. Head of Finance/PAO Officer
Transaction date
Sale
Price
10.53
Quantity 237 -2.1%
Value US$2,496
YANG GUANG President and CEO Executive Director
Transaction date
Purchase
Price
10.10
Quantity 25,000 +33.3%
Value US$252,500
YANG GUANG President and CEO Executive Director
Transaction date
Purchase
Price
10.18
Quantity 25,000 +50.0%
Value US$254,500
YANG GUANG President and CEO Executive Director
Transaction date
Purchase
Price
10.10
Quantity 1 +0.0%
Value US$10
YANG GUANG President and CEO Executive Director
Transaction date
Purchase
Price
9.10
Quantity 50,000 New position
Value US$455,000
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-08-05 2026-08-04 S Sale
2.5
Wiater Christina

PAO

Officer
85,863 +21.7%
393.33
US$4,050,543 		85,863 +21.7% 393.33 US$4,050,543
2026-08-04 2026-08-04 PrS Proposed sale
2.5
CHRISTINA WIATER

Officer

Officer
60,282
73.03
US$3,886,197 		60,282 73.03 US$3,886,197
2026-08-05 2026-08-03 S Sale
2.5
Wiater Christina

PAO

Officer
14,270 +9.6%
399.08
US$1,974,234 		14,270 +9.6% 399.08 US$1,974,234
2026-08-05 2026-08-03 S Sale
2.5
Wiater Christina

PAO

Officer
17,389 -98.6%
87.49
US$1,521,402 		17,389 -98.6% 87.49 US$1,521,402
2026-08-05 2026-08-03 S Sale
2.5
Wiater Christina

PAO

Officer
7,978 -31.1%
86.61
US$690,960 		7,978 -31.1% 86.61 US$690,960
2026-08-03 2026-08-03 PrS Proposed sale
2.5
Wiater Christina

PFO/PAO
25,370
87.21
US$2,212,626 		25,370 87.21 US$2,212,626
2026-06-22 2026-06-17 S Sale
3.7
PAULSON & CO. INC.
Large shareholder
1,900,000 -24.5%
77.25
US$146,775,000 		1,900,000 -24.5% 77.25 US$146,775,000
2026-06-17 2026-06-17 PrS Proposed sale
3.7
PAULSON & CO. INC.

10% Stockholder; Director

Non-Executive Director Large shareholder
1,900,000
82.72
US$157,168,000 		1,900,000 82.72 US$157,168,000
2026-05-05 2026-05-04 S Sale
2.1
Hart Richard Jonathan

CLO and CAO

Officer
11,208 -13.2%
67.73
US$759,083 		11,208 -13.2% 67.73 US$759,083
2026-05-05 2026-05-04 S Sale
2.1
Hart Richard Jonathan

CLO and CAO

Officer
88,792 -51.1%
66.87
US$5,937,938 		88,792 -51.1% 66.87 US$5,937,938
2026-05-04 2026-05-04 PrS Proposed sale
2.1
RICHARD J HART

Officer

Officer
100,000
66.97
US$6,697,020 		100,000 66.97 US$6,697,020
2026-02-12 2026-02-11 S Sale
1.2
Chersi Robert J
Non-Executive Director
28,753 -43.5%
51.30
US$1,475,029 		28,753 -43.5% 51.30 US$1,475,029
2026-02-11 2026-02-11 PrS Proposed sale
1.2
Chersi Robert J

Spouse
28,753
51.29
US$1,474,741 		28,753 51.29 US$1,474,741
2026-02-12 2026-02-10 S Sale
1.2
Trebbi Barbara
Non-Executive Director
9,691 -21.3%
51.22
US$496,329 		9,691 -21.3% 51.22 US$496,329
2026-02-11 2026-02-09 PrS Proposed sale
1.2
Trebbi Barbara

Director

Non-Executive Director
9,691
51.22
US$496,329 		9,691 51.22 US$496,329
2025-09-05 2025-09-03 S Sale
3.7
PAULSON & CO. INC.
Large shareholder
1,206,839 -13.5%
47.69
US$57,554,152 		1,206,839 -13.5% 47.69 US$57,554,152
2025-09-03 2025-09-03 PrS Proposed sale
3.7
PAULSON & CO. INC.

10% Stockholder; Director

Non-Executive Director Large shareholder
1,206,839
50.48
US$60,921,232 		1,206,839 50.48 US$60,921,232
2025-05-16 2025-05-16 PrS Proposed sale
3.1
Rana Suren

Officer; Former President, CEO & Director

Executive Director
371,726
30.38
US$11,293,035 		371,726 30.38 US$11,293,035
2024-11-14 2024-11-11 PrS Proposed sale
2.1
Hart Richard Jonathan

Officer; Chief Legal Officer

Officer
70,000
28.52
US$1,996,455 		70,000 28.52 US$1,996,455
2024-11-13 2024-11-11 S Sale
2.1
Hart Richard Jonathan

Chief Legal Officer

Officer
70,000 -31.0%
28.52
US$1,996,400 		70,000 -31.0% 28.52 US$1,996,400
2024-02-15 2024-02-14 S Sale
3.1
Rana Suren

President and CEO

Executive Director
109,960 -45.6%
20.74
US$2,280,361 		109,960 -45.6% 20.74 US$2,280,361
2024-02-14 2024-02-14 PrS Proposed sale
3.1
Rana Suren

Officer; President, CEO & Director

Executive Director
109,960
21.24
US$2,336,000 		109,960 21.24 US$2,336,000
2022-02-16 2022-02-16 S Sale
2.1
Hart Richard Jonathan

Chief Legal Officer

Officer
300 -0.6%
24.66
US$7,398 		300 -0.6% 24.66 US$7,398
2022-02-16 2022-02-16 S Sale
2.1
Hart Richard Jonathan

Chief Legal Officer

Officer
598 -1.1%
24.65
US$14,741 		598 -1.1% 24.65 US$14,741
2022-02-16 2022-02-15 S Sale
2.5
Wiater Christina

PFO / PAO

Officer
37 -2.0%
24.84
US$919 		37 -2.0% 24.84 US$919
2022-02-16 2022-02-15 S Sale
2.5
Wiater Christina

PFO / PAO

Officer
200 -9.7%
24.88
US$4,976 		200 -9.7% 24.88 US$4,976
2022-02-16 2022-02-15 S Sale
2.1
Hart Richard Jonathan

Chief Legal Officer

Officer
1,475 -2.8%
24.84
US$36,639 		1,475 -2.8% 24.84 US$36,639
2022-02-10 2022-02-08 S Sale
3.1
Rana Suren

President and CEO

Executive Director
119,963 -47.8%
24.05
US$2,884,822 		119,963 -47.8% 24.05 US$2,884,822
2022-01-03 2021-12-31 S Sale
3.1
Rana Suren

President and CEO

Executive Director
128,176 -32.0%
25.81
US$3,308,787 		128,176 -32.0% 25.81 US$3,308,787
2021-12-22 2021-12-21 S Sale
3.7
PAULSON & CO. INC.
Large shareholder
100,000 -1.1%
25.18
US$2,518,000 		100,000 -1.1% 25.18 US$2,518,000
2021-12-22 2021-12-21 S Sale
3.7
PAULSON & CO. INC.
Large shareholder
690,000 -7.1%
31.50
US$21,735,000 		690,000 -7.1% 31.50 US$21,735,000
2021-12-22 2021-12-21 S Sale
2.5
Wiater Christina

PFO / PAO

Officer
38 -2.7%
24.91
US$947 		38 -2.7% 24.91 US$947
2021-12-22 2021-12-21 S Sale
2.1
Hart Richard Jonathan

Chief Legal Officer

Officer
57 -0.1%
24.91
US$1,420 		57 -0.1% 24.91 US$1,420
2021-12-10 2021-12-08 S Sale
3.7
PAULSON & CO. INC.
Large shareholder
10,260,431 -51.3%
31.50
US$323,203,576 		10,260,431 -51.3% 31.50 US$323,203,576
2021-02-17 2021-02-16 S Sale
2.1
Hart Richard Jonathan

Chief Legal Officer

Officer
2,679 -10.7%
20.41
US$54,678 		2,679 -10.7% 20.41 US$54,678
2021-02-17 2021-02-16 S Sale
2.5
Wiater Christina

PFO / PAO

Officer
396 -13.0%
20.28
US$8,031 		396 -13.0% 20.28 US$8,031
2020-12-22 2020-12-21 S Sale
2.5
Wiater Christina

PFO / PAO

Officer
39 -1.6%
18.68
US$729 		39 -1.6% 18.68 US$729
2020-12-22 2020-12-21 S Sale
2.1
Hart Richard Jonathan

Chief Legal Officer

Officer
39 -0.2%
18.68
US$729 		39 -0.2% 18.68 US$729
2020-06-26 2020-06-24 S Sale
3.0
Paulson John
Non-Executive Director Large shareholder
647,263 -3.1%
9.79
US$6,336,705 		647,263 -3.1% 9.79 US$6,336,705
2020-06-26 2020-06-24 S Sale
3.7
PAULSON & CO. INC.
Large shareholder
647,263 -3.1%
9.79
US$6,336,705 		647,263 -3.1% 9.79 US$6,336,705
2020-06-26 2020-06-24 B Purchase
3.0
Paulson John
Non-Executive Director Large shareholder
647,263 +3.2%
9.79
US$6,336,705 		647,263 +3.2% 9.79 US$6,336,705
2020-06-26 2020-06-24 B Purchase
3.7
PAULSON & CO. INC.
Large shareholder
647,263 +3.2%
9.79
US$6,336,705 		647,263 +3.2% 9.79 US$6,336,705
2020-02-19 2020-02-18 S Sale
1.6
Mahoney Daniel K.

Head of Finance/PAO

Officer
1 -0.0%
10.57
US$11 		1 -0.0% 10.57 US$11
2020-02-19 2020-02-18 S Sale
1.6
Mahoney Daniel K.

Head of Finance/PAO

Officer
936 -8.7%
10.51
US$9,837 		936 -8.7% 10.51 US$9,837
2020-02-19 2020-02-18 S Sale
1.6
Mahoney Daniel K.

Head of Finance/PAO

Officer
237 -2.1%
10.53
US$2,496 		237 -2.1% 10.53 US$2,496
2019-12-30 2019-12-30 B Purchase YANG GUANG

President and CEO

Executive Director
25,000 +33.3%
10.10
US$252,500 		25,000 +33.3% 10.10 US$252,500
2019-12-30 2019-12-27 B Purchase YANG GUANG

President and CEO

Executive Director
25,000 +50.0%
10.18
US$254,500 		25,000 +50.0% 10.18 US$254,500
2019-12-30 2019-12-26 B Purchase YANG GUANG

President and CEO

Executive Director
1 +0.0%
10.10
US$10 		1 +0.0% 10.10 US$10
2019-08-08 2019-08-06 B Purchase YANG GUANG

President and CEO

Executive Director
50,000 New position
9.10
US$455,000 		50,000 New position 9.10 US$455,000
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