Janus Henderson Group
AAMI

Janus Henderson Group’s Acadian Asset Management AAMI Stock Holding History

Janus Henderson Group’s Portfolio AAMI Stock Details AAMI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$10.6M Buy
195,337
+182,904
+1,471% +$9.63M 0.01% 747
2025
Q4 		$585K Sell
12,433
-52,317
-81% -$2.41M ﹤0.01% 1953
2025
Q3 		$3.12M Buy
64,750
+52,317
+421% +$2.33M ﹤0.01% 1111
2025
Q2 		$438K Hold
12,433
– – ﹤0.01% 2013
2025
Q1 		$322K Hold
12,433
– – ﹤0.01% 2177
2024
Q4 		$327K Hold
12,433
– – ﹤0.01% 2216
2024
Q3 		$316K Hold
12,433
– – ﹤0.01% 2236
2024
Q2 		$275K Sell
12,433
-212
-2% -$4.79K ﹤0.01% 2245
2024
Q1 		$289K Hold
12,645
– – ﹤0.01% 2251
2023
Q4 		$242K Sell
12,645
-33
-0.3% -$583 ﹤0.01% 2357
2023
Q3 		$246K Buy
12,678
+2
+0% +$41 ﹤0.01% 2278
2023
Q2 		$266K Buy
12,676
+35
+0.3% +$779 ﹤0.01% 2319
2023
Q1 		$298K Buy
+12,641
New +$297K ﹤0.01% 2290
2022
Q1 		– Sell
-12,164
Closed -$311K – 2719
2021
Q4 		$311K Buy
+12,164
New +$342K ﹤0.01% 2182
2015
Q3 		– Sell
-100,000
Closed -$1.78M – 861
2015
Q2 		$1.78M Buy
+100,000
New +$1.9M 0.01% 529

Other funds holding AAMI

PC
Paulson & Co New York $3.11B AUM 94.93% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Jennison Associates
Jennison Associates New York $145B AUM 34.61% 1-Year Est. Return
ECP
Empyrean Capital Partners Los Angeles, California $3.07B AUM 34.24% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Impax Asset Management Group
Impax Asset Management Group London, United Kingdom $14.3B AUM 19.8% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Janus Henderson Group's AAMI Position: Q1 2026 in Review

Janus Henderson Group increased its Acadian Asset Management (AAMI) stake by 1,471% in Q1 2026, buying an estimated $9.63M and bringing the position to 195,337 shares worth $10.6M. The position accounts for 0.01% of the portfolio, ranked #747.

Janus Henderson Group first reported a position in AAMI in Q2 2015 and has held it in 15 quarters since. 257 funds tracked by Wall St. Rank hold AAMI as of Q1 2026.

  • Janus Henderson Group held 195,337 shares of Acadian Asset Management worth $10.6M as of Q1 2026.
  • Janus Henderson Group bought 182,904 Acadian Asset Management shares in Q1 2026, an estimated $9.63M.
  • Acadian Asset Management made up 0.01% of Janus Henderson Group's portfolio in Q1 2026, its #747 holding.
  • Janus Henderson Group first reported a position in Acadian Asset Management in Q2 2015 and has held it in 15 quarters since.
  • 257 funds tracked by Wall St. Rank held Acadian Asset Management as of Q1 2026.

Based on Janus Henderson Group's 13F filing for Q1 2026, filed 15 May 2026.