MF
AMG icon

Magnetar Financial’s Affiliated Managers Group AMG Stock Holding History

Magnetar Financial’s Portfolio AMG Stock Details AMG Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		– Sell
-4,110
Closed -$1.14M – 1155
2026
Q1 		$1.14M Buy
4,110
+3,198
+351% +$964K 0.01% 449
2025
Q4 		$263K Buy
+912
New +$236K ﹤0.01% 728
2025
Q3 		– Sell
-1,448
Closed -$285K – 879
2025
Q2 		$285K Buy
+1,448
New +$251K ﹤0.01% 715
2024
Q4 		– Sell
-1,374
Closed -$244K – 606
2024
Q3 		$244K Buy
+1,374
New +$233K 0.01% 437
2023
Q3 		– Sell
-9,713
Closed -$1.46M – 446
2023
Q2 		$1.46M Sell
9,713
-2,801
-22% -$401K 0.03% 245
2023
Q1 		$1.78M Buy
+12,514
New +$1.98M 0.03% 313
2022
Q4 		– Sell
-10,587
Closed -$1.18M – 779
2022
Q3 		$1.18M Buy
+10,587
New +$1.33M 0.02% 689
2021
Q3 		– Sell
-1,928
Closed -$297K – 1304
2021
Q2 		$297K Buy
+1,928
New +$308K ﹤0.01% 1034
2018
Q4 		– Sell
-3,598
Closed -$492K – 282
2018
Q3 		$492K Buy
+3,598
New +$531K 0.01% 202

Other funds holding AMG

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Boston Partners
Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return
AI
Ariel Investments Chicago, Illinois $10B AUM 42.59% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $36.7B AUM 74.15% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Magnetar Financial's AMG Position: Q2 2026 in Review

Magnetar Financial sold out of Affiliated Managers Group (AMG) in Q2 2026, closing a stake of 4,110 shares — an estimated $1.14M sold.

Magnetar Financial first reported a position in AMG in Q3 2018 and held it in 9 quarters. The position peaked at $1.78M in Q1 2023. 566 funds tracked by Wall St. Rank hold AMG as of Q2 2026.

  • Magnetar Financial reported no remaining Affiliated Managers Group position as of Q2 2026 after selling out during the quarter.
  • Magnetar Financial sold 4,110 Affiliated Managers Group shares in Q2 2026, an estimated $1.14M.
  • Magnetar Financial first reported a position in Affiliated Managers Group in Q3 2018 and held it in 9 quarters.
  • Magnetar Financial's Affiliated Managers Group position peaked at $1.78M in Q1 2023.
  • 566 funds tracked by Wall St. Rank held Affiliated Managers Group as of Q2 2026.

Based on Magnetar Financial's 13F filing for Q2 2026, filed 14 Aug 2026.