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Cornerstone Investment Partners’s Affiliated Managers Group AMG Stock Holding History

Cornerstone Investment 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
Q1 		$421K Buy
1,522
+60
+4% +$18.1K 0.02% 85
2025
Q4 		$421K Buy
1,462
+21
+1% +$5.43K 0.02% 76
2025
Q3 		$344K Sell
1,441
-578
-29% -$127K 0.01% 93
2025
Q2 		$397K Buy
2,019
+10
+0.5% +$1.74K 0.02% 79
2025
Q1 		$338K Sell
2,009
-1,102
-35% -$192K 0.02% 82
2024
Q4 		$575K Sell
3,111
-87
-3% -$16.2K 0.03% 59
2024
Q3 		$569K Buy
3,198
+96
+3% +$16.3K 0.03% 56
2024
Q2 		$485K Sell
3,102
-16
-0.5% -$2.55K 0.02% 80
2024
Q1 		$522K Buy
3,118
+17
+0.5% +$2.64K 0.03% 80
2023
Q4 		$470K Hold
3,101
– – 0.03% 83
2023
Q3 		$404K Buy
3,101
+11
+0.4% +$1.54K 0.03% 85
2023
Q2 		$463K Hold
3,090
– – 0.03% 73
2023
Q1 		$440K Sell
3,090
-23
-0.7% -$3.63K 0.03% 78
2022
Q4 		$493K Hold
3,113
– – 0.03% 71
2022
Q3 		$348K Buy
3,113
+12
+0.4% +$1.51K 0.02% 84
2022
Q2 		$362K Buy
3,101
+675
+28% +$86.9K 0.02% 85
2022
Q1 		$342K Sell
2,426
-93
-4% -$13.4K 0.02% 111
2021
Q4 		$414K Buy
2,519
+1,025
+69% +$172K 0.02% 94
2021
Q3 		$226K Buy
+1,494
New +$245K 0.01% 158

Other funds holding AMG

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
AI
Ariel Investments Chicago, Illinois $8.93B AUM 29.58% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $95.5B AUM 28.4% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $29.7B AUM 43.33% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Cornerstone Investment Partners's AMG Position: Q1 2026 in Review

Cornerstone Investment Partners increased its Affiliated Managers Group (AMG) stake by 4.1% in Q1 2026, buying an estimated $18.1K and bringing the position to 1,522 shares worth $421K. The position accounts for 0.02% of the portfolio, ranked #85.

Cornerstone Investment Partners first reported a position in AMG in Q3 2021 and has held it in 19 quarters since. The position peaked at $575K in Q4 2024. 543 funds tracked by Wall St. Rank hold AMG as of Q1 2026.

  • Cornerstone Investment Partners held 1,522 shares of Affiliated Managers Group worth $421K as of Q1 2026.
  • Cornerstone Investment Partners bought 60 Affiliated Managers Group shares in Q1 2026, an estimated $18.1K.
  • Affiliated Managers Group made up 0.02% of Cornerstone Investment Partners's portfolio in Q1 2026, its #85 holding.
  • Cornerstone Investment Partners first reported a position in Affiliated Managers Group in Q3 2021 and has held it in 19 quarters since.
  • Cornerstone Investment Partners's Affiliated Managers Group position peaked at $575K in Q4 2024.
  • 543 funds tracked by Wall St. Rank held Affiliated Managers Group as of Q1 2026.

Based on Cornerstone Investment Partners's 13F filing for Q1 2026, filed 8 May 2026.