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AAMI

Acadian Asset Management (AAMI) stock: insider trades, news & valuation

Heavy selling
Close · Oct 9, 2026 $93.71 +0.4% on the day +110.9% over 12 months 52-week range $41.74 – $97.20

Share price and insider trades

AAMI closeInsider buyInsider sale
406080100NovDecJan 2026FebMarAprMayJunJulAugSepOctEEarnings release filed 2025-10-30EEarnings release filed 2026-02-05EEarnings release filed 2026-04-30EEarnings release filed 2026-07-30Sold $22,536 on 2026-08-04 · Christina WiaterSold $496,373 on 2026-02-10 · Barbara TrebbiSold $1,475,029 on 2026-02-11 · Robert J ChersiSold $2,212,603 on 2026-08-03 · Christina WiaterSold $6,696,639 on 2026-05-04 · Richard Jonathan HartSold $146,775,000 on 2026-06-17 · Paulson & Co. Inc.
Bought, 12 months$0
Sold, 12 months$158M
Insiders buying0
Insiders selling5

Acadian Asset Management insider trading at a glance (Oct 9, 2026): in the past 12 months, 0 insiders bought $0 and 5 sold $158M of AAMI stock on the open market.

AAMI insider buying and selling by quarter

Open-market purchases (green, above the line) and sales (red, below), by trade date.

Q1 2026: $2.0M sold (2 trades)Q1 2026Q2 2026: $153M sold (3 trades)Q2 2026Q3 2026: $2.2M sold (4 trades)Q3 2026Q4 2026
QuarterBoughtPurchasesSoldSales
Q4 2026—0—0
Q3 2026—0$2.2M4
Q2 2026—0$153M3
Q1 2026—0$2.0M2

Valuation, profit and volume

P/E (trailing)n/aSector median —
Market value— 
Profit margin—Revenue growth —
Volume vs. 50-day1.0×Last 5 sessions
Insiders' paper profit—On all tracked purchases —

Summary

Over the past 12 months, 0 Acadian Asset Management Inc. insiders reported open-market purchases totaling $0, while 5 insiders reported sales totaling $158M. Among insiders with enough purchase history to measure, Paulson & Co. Inc. (10% Owner) has the highest Insider Score at 32. 0 of 9 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.

AAMI earnings: how the stock reacted

Each quarterly results release (SEC 8-K Item 2.02), the trend before it, insider trades in the 30 days before, and the 2-day market reaction. “E” marks releases on the chart above.

Does it matter? →
Release15 days beforeInsiders, 30 days beforeReaction (2 days)Next 30 days
Jul 30, 2026 +0.3% None +7.0%S&P +2.4% +10.7%
Apr 30, 2026 +0.2% None +0.6%S&P +1.3% +10.4%
Feb 5, 2026 -2.7% None -2.9%S&P +0.6% +0.4%
Oct 30, 2025 +3.4% None -2.4%S&P -0.8% -6.8%
Jul 31, 2025 +2.3% None -0.2%S&P -2.0% +28.8%
May 1, 2025 +1.5% None +3.3%S&P +2.2% +8.2%
Feb 6, 2025 -5.7% None +4.4%S&P -0.6% -3.9%
Oct 31, 2024 -1.0% None +4.0%S&P -1.5% +13.7%

Most companies bar insiders from trading in the weeks before results, so pre-earnings purchases are rare and often made by directors or under pre-set plans. Past reactions don't predict future ones.

Insider transactions

Open-market purchases and sales.

Filed Insider Type Shares Price Value Since Score
Aug 5SEC Christina WiaterPao Sell 17,389247 held (−99%) $87.49 $1.5M +7.1% —
Aug 5SEC Christina WiaterPao Sell 7,97817,636 held (−31%) $86.61 $691K +8.2% —
Aug 5SEC Christina WiaterPao Sell 244 $92.36 $23K +1.5% —
Aug 5SEC Christina WiaterPao Sell 3244 held (−1%) $88.11 $264 +6.4% —
Jun 22SEC Paulson & Co. Inc.10% Owner Sell 1,900,0005,843,282 held (−25%) $77.25 $147M +21.3% 32
May 5SEC Richard Jonathan HartGeneral Counsel Sell 88,79285,071 held (−51%) $66.87 $5.9M +40.1% —
May 5SEC Richard Jonathan HartGeneral Counsel Sell 11,20873,863 held (−13%) $67.73 $759K +38.4% —
Feb 12SEC Robert J ChersiDirector Sell 28,75337,384 held (−43%) $51.30 $1.5M +82.7% —
Feb 12SEC Barbara TrebbiDirector Sell 9,69135,771 held (−21%) $51.22 $496K +83.0% —

Insiders at Acadian Asset Management Inc.

InsiderBoughtSoldLast filingScore
Paulson & Co. Inc.10% Owner — $147M Jun 22, 2026 32
Richard Jonathan HartGeneral Counsel — $6.7M May 5, 2026 —
Christina WiaterPao — $2.2M Aug 5, 2026 —
Robert J ChersiDirector — $1.5M Feb 12, 2026 —
Barbara TrebbiDirector — $496K Feb 12, 2026 —

AAMI stock: common questions

Are Acadian Asset Management Inc. insiders buying AAMI stock?

In the past 12 months, 0 insiders reported open-market purchases of AAMI worth $0.

Are Acadian Asset Management Inc. insiders selling AAMI stock?

5 insiders reported sales worth $158M over the same period.

Where does this data come from?

Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.

What is AAMI's 52-week range?

Over the past year AAMI has traded between $41.74 and $97.20. It last closed at $93.71 on Oct 9, 2026.