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Mangrove Partners’s Affiliated Managers Group AMG Stock Holding History

Mangrove Partners’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 		$230K Buy
+680
New +$211K 0.02% 328
2026
Q1 		– Sell
-775
Closed -$223K – 434
2025
Q4 		$223K Buy
+775
New +$200K 0.02% 279

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 $3.38T AUM 44.17% 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

Mangrove Partners's AMG Position: Q2 2026 in Review

Mangrove Partners opened a new position in Affiliated Managers Group (AMG) in Q2 2026: 680 shares worth $230K. The stake represents 0.02% of the portfolio and ranks #328 among its holdings. This is a return to the name: Mangrove Partners previously reported a position in AMG as recently as Q4 2025.

Mangrove Partners first reported a position in AMG in Q4 2025 and has held it in 2 quarters since. 566 funds tracked by Wall St. Rank hold AMG as of Q2 2026.

  • Mangrove Partners held 680 shares of Affiliated Managers Group worth $230K as of Q2 2026.
  • Affiliated Managers Group was a new Mangrove Partners position in Q2 2026.
  • Affiliated Managers Group made up 0.02% of Mangrove Partners's portfolio in Q2 2026, its #328 holding.
  • Mangrove Partners first reported a position in Affiliated Managers Group in Q4 2025 and has held it in 2 quarters since.
  • 566 funds tracked by Wall St. Rank held Affiliated Managers Group as of Q2 2026.

Based on Mangrove Partners's 13F filing for Q2 2026, filed 14 Aug 2026.