Robeco Institutional Asset Management
AMG icon

Robeco Institutional Asset Management’s Affiliated Managers Group AMG Stock Holding History

Robeco Institutional Asset Management’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 		$13.5M Sell
39,981
-9,310
-19% -$2.89M 0.02% 412
2026
Q1 		$13.6M Buy
49,291
+14,383
+41% +$4.33M 0.02% 392
2025
Q4 		$10.1M Buy
34,908
+15,432
+79% +$3.99M 0.01% 435
2025
Q3 		$4.64M Hold
19,476
– – 0.01% 571
2025
Q2 		$3.83M Buy
+19,476
New +$3.38M 0.01% 597
2019
Q2 		– Sell
-15,645
Closed -$1.68M – 964
2019
Q1 		$1.68M Buy
15,645
+9,484
+154% +$1.01M 0.01% 731
2018
Q4 		$593K Buy
6,161
+5,080
+470% +$574K ﹤0.01% 789
2018
Q3 		$148K Sell
1,081
-2,079
-66% -$307K ﹤0.01% 926
2018
Q2 		$470K Sell
3,160
-1,648
-34% -$272K ﹤0.01% 819
2018
Q1 		$913K Buy
4,808
+3,727
+345% +$726K ﹤0.01% 758
2017
Q4 		$222K Buy
+1,081
New +$209K ﹤0.01% 830
2017
Q2 		– Sell
-952
Closed -$156K – 864
2017
Q1 		$156K Buy
+952
New +$151K ﹤0.01% 802
2016
Q3 		– Sell
-2,491
Closed -$351K – 783
2016
Q2 		$351K Hold
2,491
– – ﹤0.01% 723
2016
Q1 		$405K Buy
2,491
+765
+44% +$107K ﹤0.01% 720
2015
Q4 		$276K Hold
1,726
– – ﹤0.01% 751
2015
Q3 		$295K Hold
1,726
– – ﹤0.01% 704
2015
Q2 		$377K Hold
1,726
– – ﹤0.01% 693
2015
Q1 		$371K Buy
1,726
+622
+56% +$131K ﹤0.01% 668
2014
Q4 		$234K Buy
1,104
+444
+67% +$88.2K ﹤0.01% 732
2014
Q3 		$132K Hold
660
– – ﹤0.01% 721
2014
Q2 		$136K Buy
660
+341
+107% +$65.9K ﹤0.01% 702
2014
Q1 		$64K Hold
319
– – ﹤0.01% 678
2013
Q4 		$69K Hold
319
– – ﹤0.01% 589
2013
Q3 		$58K Hold
319
– – ﹤0.01% 604
2013
Q2 		$52K Buy
+319
New +$50.5K ﹤0.01% 596

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

Robeco Institutional Asset Management's AMG Position: Q2 2026 in Review

Robeco Institutional Asset Management reduced its Affiliated Managers Group (AMG) stake by 19% in Q2 2026, selling an estimated $2.89M and leaving 39,981 shares worth $13.5M. The position accounts for 0.02% of the portfolio, ranked #412.

Robeco Institutional Asset Management first reported a position in AMG in Q2 2013 and has held it in 25 quarters since. The position peaked at $13.6M in Q1 2026. 564 funds tracked by Wall St. Rank hold AMG as of Q2 2026.

  • Robeco Institutional Asset Management held 39,981 shares of Affiliated Managers Group worth $13.5M as of Q2 2026.
  • Robeco Institutional Asset Management sold 9,310 Affiliated Managers Group shares in Q2 2026, an estimated $2.89M.
  • Affiliated Managers Group made up 0.02% of Robeco Institutional Asset Management's portfolio in Q2 2026, its #412 holding.
  • Robeco Institutional Asset Management first reported a position in Affiliated Managers Group in Q2 2013 and has held it in 25 quarters since.
  • Robeco Institutional Asset Management's Affiliated Managers Group position peaked at $13.6M in Q1 2026.
  • 564 funds tracked by Wall St. Rank held Affiliated Managers Group as of Q2 2026.

Based on Robeco Institutional Asset Management's 13F filing for Q2 2026, filed 21 Jul 2026.